HighCVE-2026-45447

    Heap Use-After-Free in the PKCS7_verify() Function (CVE-2026-45447)

    Published Last modified Sources: Red Hat, SUSE, Debian LTS, Msrc Update Guide, CVE.org, Ubuntu, Debian, BSI

    What is affected, what to do

    A flaw was found in OpenSSL. When processing a specially crafted PKCS#7 or S/MIME (Secure/Multipurpose Internet Mail Extensions) signed message, a heap use-after-free vulnerability in the PKCS7_verify() function can be triggered.

    An exploit is publicly available. Update OpenSSL to version 4.0.1, OpenSSL to version 3.6.3, OpenSSL to version 3.5.7.

    Affected
    • OpenSSL lt 4.0.0..4.0.1
    • OpenSSL lt 3.6.0..3.6.3
    • OpenSSL lt 3.5.0..3.5.7
    • OpenSSL lt 3.4.0..3.4.6
    • OpenSSL lt 3.0.0..3.0.21
    • OpenSSL lt 1.1.1..1.1.1zh
    • OpenSSL lt 1.0.2..1.0.2zq
    Fixed in
    • OpenSSL 4.0.1
    • OpenSSL 3.6.3
    • OpenSSL 3.5.7
    • OpenSSL 3.4.6
    • OpenSSL 3.0.21
    • OpenSSL 1.1.1zh
    • OpenSSL 1.0.2zq

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    8.8

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    8.8

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: Red Hat, SUSE, Debian LTS, Msrc Update Guide, CVE.org, Ubuntu, Debian, BSI

    4.0 %

    EPSS score

    Moderate — model estimates 1-10% exploitation likelihood.

    Source: FIRST EPSS, percentile 90.5

    Show all metrics
    Severity
    High
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    128.22 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    PoC (publicly reported)
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    8.8 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    8.8
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    4.0 %
    Moderate — model estimates 1-10% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    90.5
    Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-416

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    A flaw was found in OpenSSL. When processing a specially crafted PKCS#7 or S/MIME (Secure/Multipurpose Internet Mail Extensions) signed message, a heap use-after-free vulnerability in the PKCS7_verify() function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, leading to incorrect memory deallocation. A remote attacker could exploit this to cause application crashes, memory corruption, or potentially achieve remote code execution.

    Source: redhat_csaf, suse_csaf, Debian LTS Advisories, Microsoft Security Update Guide, NVD (NIST), Ubuntu Security Notices, Debian Security Advisories, CVE.org (MITRE), cvelistv5, BSI WID Portal, BSI CSAF

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    OpenSSLOpenSSL
    • 3.4.0 – < 3.4.6
    • 3.0.0 – < 3.0.21
    • 4.0.0 – < 4.0.1
    • 3.6.0 – < 3.6.3
    • 1.0.2 – < 1.0.2zq
    • 1.1.1 – < 1.1.1zh
    • 3.5.0 – < 3.5.7
    • 3.4.6
    • 3.0.21
    • 4.0.1
    • 3.6.3
    • 1.0.2zq
    • 1.1.1zh
    • 3.5.7
    opensslopenssl
    • 3.6.0 – < 3.6.3
    • 1.0.2 – < 1.0.2zq
    • 3.0.0 – < 3.0.21
    • 1.1.1 – < 1.1.1zh
    • 3.5.0 – < 3.5.7
    • 3.4.0 – < 3.4.6
    • 4.0.0
    • 3.6.3
    • 1.0.2zq
    • 3.0.21
    • 1.1.1zh
    • 3.5.7
    • 3.4.6
    • —
    IBMApp Connect Enterprise CD
    • < 13.4.0
    • 13.4.0
    IBMApp Connect Enterprise LTS
    • < 13.4.0
    • < 12.0.26
    • 13.4.0
    • 12.0.26
    Open SourceOpenSSL
    • < 3.4.6
    • < 1.0.2zq
    • < 4.0.1
    • < 3.6.3
    • < 3.0.21
    • < 1.1.1zh
    • 3.4.6
    • 1.0.2zq
    • 4.0.1
    • 3.6.3
    • 3.0.21
    • 1.1.1zh
    OracleSolaris
    • <11.3 ESU 36.36
    • <11.4 SRU 94
    • —
    • —
    SplunkSplunk Enterprise
    • < 10.0.9
    • < 10.2.6
    • < 10.4.2
    • < 9.4.14
    • 10.0.9
    • 10.2.6
    • 10.4.2
    • 9.4.14

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxdebianopensslbookworm
    Linuxdebianopensslbullseye
    Linuxdebianopenssltrixie

    Weakness classes (CWE)

    • CWE-416Use After Free

      Variant

      The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

      Entry at MITRE CWE-416

    Public exploit references

    Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

    Public exploit references
    PoC-in-GitHub (nomi-sec)CVE-2026-45447 (opens in a new tab)github.comPoC (publicly reported)reported, not verified
    PoC-in-GitHub (nomi-sec)CVE-2026-45447 (opens in a new tab)github.comPoC (publicly reported)reported, not verified

    References & sources

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/45xxx/CVE-2026-45447.json">CVE-2026-45447</a>

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    2. Record modifiedRed Hat ADP

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:66524

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    3. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/45xxx/CVE-2026-45447.json">CVE-2026-45447</a>

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    4. Record modifiedopenssl.org

      Show 18 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e
      Referenceadded
      —
      https://openssl-library.org/news/secadv/20260609.txt
      Referenceremoved
      https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c
      —
      Referenceremoved
      https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8
      —
      Referenceremoved
      https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54
      —
      Referenceremoved
      https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c
      —
      Referenceremoved
      https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e
      —
      Referenceremoved
      https://openssl-library.org/news/secadv/20260609.txt
      —
      Reference typeremoved
      https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c Types: Patch
      —
      Reference typeremoved
      https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8 Types: Patch
      —
      Reference typeremoved
      https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54 Types: Patch
      —
      Reference typeremoved
      https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c Types: Patch
      —
      Reference typeremoved
      https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e Types: Patch
      —
      Reference typeremoved
      https://openssl-library.org/news/secadv/20260609.txt Types: Vendor Advisory
      —

      Source identifier: openssl-security@openssl.org

    5. Record modifiedRed Hat ADP

      Show 41 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)added
      —
      Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/45xxx/CVE-2026-45447.json">CVE-2026-45447</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:25237
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:25239
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:26275
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:26319
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:29197
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:34102
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:35869
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:36215
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:36217
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:39009
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:39012
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:39981
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:44438
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:47735
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:47737
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:58563
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:58981
      Referenceadded
      —
      https://access.redhat.com/security/cve/CVE-2026-45447
      Referenceadded
      —
      https://bugzilla.redhat.com/show_bug.cgi?id=2481898
      Referenceadded
      —
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45447.json
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:25237
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:25239
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:26275
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:26319
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:29197
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:34102
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:35869
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:36215
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:36217
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:39009
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:39012
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:39981
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:44438
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:47735
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:47737
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:58563
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:58981
      —
      Referenceremoved
      https://access.redhat.com/security/cve/CVE-2026-45447
      —
      Referenceremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2481898
      —
      Referenceremoved
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45447.json
      —

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    Show 11 older changes

    1. Record modifiedRed Hat ADP

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:58981

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    2. Record modifiedRed Hat ADP

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:58563
      Affected versions (publisher)changed
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8 (+39)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    3. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    4. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    5. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    6. Record modifiedRed Hat ADP

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:44438
      Affected versions (publisher)changed
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    7. Record modifiedRed Hat ADP

      1 individual change: Affected versions (publisher)

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Affected versions (publisher)changed
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+38)
      Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+39)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    8. Record modifiedRed Hat ADP

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:35869
      Affected versions (publisher)changed
      Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 10) (+14)
      Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux AppStream (v. 9) (+15)

      Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    9. Initial analysis by NVDNVD

      Newly listed as affected:
      • OpenSSL (1.0.2 – before 1.0.2zq; 1.1.1 – before 1.1.1zh; 3.0.0 – before 3.0.21; 3.4.0 – before 3.4.6; 3.5.0 – before 3.5.7; 3.6.0 – before 3.6.3; 1 individual version)
      Show 7 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Product configurationadded
      —
      OR *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.0.2 up to (excluding) 1.0.2zq *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 1.1.1 up to (excluding) 1.1.1zh *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.0.21 *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (excluding) 3.4.6 *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (excluding) 3.5.7 *cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.6.3 *cpe:2.3:a:openssl:openssl:4.0.0:-:*:*:*:*:*:*
      Reference typeadded
      —
      OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c Types: Patch
      Reference typeadded
      —
      OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8 Types: Patch
      Reference typeadded
      —
      OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54 Types: Patch
      Reference typeadded
      —
      OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c Types: Patch
      Reference typeadded
      —
      OpenSSL Software Foundation: https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e Types: Patch
      Reference typeadded
      —
      OpenSSL Software Foundation: https://openssl-library.org/news/secadv/20260609.txt Types: Vendor Advisory

      Source identifier: nvd@nist.gov

    10. Record modifiedCISA ADP

      CVSS V3.1: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

      CVSS V3.1: before AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, after —

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      CVSSadded
      —
      AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
      CVSSremoved
      AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
      —

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    11. Record modifiedopenssl.org

      Show 10 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c
      Referenceadded
      —
      https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e
      Referenceremoved
      https://github.com/openssl/security/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c
      —
      Referenceremoved
      https://github.com/openssl/security/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8
      —
      Referenceremoved
      https://github.com/openssl/security/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54
      —
      Referenceremoved
      https://github.com/openssl/security/commit/a541ae8bfe849a30cc885e8780715c0f488e496c
      —
      Referenceremoved
      https://github.com/openssl/security/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e
      —

      Source identifier: openssl-security@openssl.org

    One NVD translation into another language is hidden.

    Linked advisories

    Embed badge

    Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.

    Badge preview for CVE-2026-45447
    <a href="https://intel.neosec.eu/en/cve/CVE-2026-45447"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-45447.svg?lang=en" alt="CVE-2026-45447 – NEOSEC Intel" height="20"></a>