MediumCVE-2026-73433

    GStreamer Gst-plugins-good: Integer Underflow (Wrap or Wraparound) (CVE-2026-73433)

    Published Last modified Sources: Debian LTS, Red Hat, CVE.org, Ubuntu

    What is affected, what to do

    A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains.

    Update GStreamer Gst-plugins-good to version 1.28.6, Red Hat Enterprise Linux 10 to version 0:1.26.7-2.el10_2.5, Red Hat Enterprise Linux 10.0 Extended Update Support to version 0:1.24.11-1.el10_0.4.

    Affected
    • GStreamer Gst-plugins-good lt *..1.28.6
    • Red Hat Enterprise Linux 10 lt *..0:1.26.7-2.el10_2.5
    • Red Hat Enterprise Linux 10.0 Extended Update Support lt *..0:1.24.11-1.el10_0.4
    • Red Hat Enterprise Linux 7 Extended Lifecycle Support lt *..0:1.10.4-4.el7_9.3
    • Red Hat Enterprise Linux 8 lt *..0:1.16.1-7.el8_10.3
    • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support lt *..0:1.16.1-4.el8_4.2
    • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On lt *..0:1.16.1-4.el8_4.2
    • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support lt *..0:1.16.1-4.el8_6.3
    • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On lt *..0:1.16.1-4.el8_6.3
    • Red Hat Enterprise Linux 8.8 Telecommunications Update Service lt *..0:1.16.1-5.el8_8.3
    • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions lt *..0:1.16.1-5.el8_8.3
    • Red Hat Enterprise Linux 9 lt *..0:1.22.12-7.el9_8.4
    • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions lt *..0:1.18.4-8.el9_2.3
    • Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions lt *..0:1.22.1-4.el9_4.3
    • Red Hat Enterprise Linux 9.6 Extended Update Support lt *..0:1.22.12-5.el9_6.3
    Fixed in
    • GStreamer Gst-plugins-good 1.28.6
    • Red Hat Enterprise Linux 10 0:1.26.7-2.el10_2.5
    • Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.24.11-1.el10_0.4
    • Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.10.4-4.el7_9.3
    • Red Hat Enterprise Linux 8 0:1.16.1-7.el8_10.3
    • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.16.1-4.el8_4.2
    • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.16.1-4.el8_4.2
    • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.16.1-4.el8_6.3
    • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:1.16.1-4.el8_6.3
    • Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.16.1-5.el8_8.3
    • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:1.16.1-5.el8_8.3
    • Red Hat Enterprise Linux 9 0:1.22.12-7.el9_8.4
    • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.18.4-8.el9_2.3
    • Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.22.1-4.el9_4.3
    • Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.22.12-5.el9_6.3

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

    Metrics

    6.6

    Priority

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

    Source: NVD, CVSS v3

    6.6

    CVSS v3

    Severity Medium on the scale from 0 to 10.

    Source: Debian LTS, Red Hat, CVE.org, Ubuntu

    0.2 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 4.0

    Show all metrics
    Severity
    Medium
    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
    56.34 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
    no public PoC known
    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
    6.6 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
    6.6
    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
    0.2 %
    Low — model estimates < 1% 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
    4.0
    Low — this CVE sits in the lower 10% of all CVEs scored today.
    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-191

    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
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    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 GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

    Source: Debian LTS Advisories, redhat_csaf, cvelistv5, NVD (NIST), Ubuntu Security Notices

    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
    GStreamergst-plugins-good
    • < 1.28.6
    • 1.28.6
    Red HatRed Hat Enterprise Linux 10
    • < 0:1.26.7-2.el10_2.5
    • 0:1.26.7-2.el10_2.5
    Red HatRed Hat Enterprise Linux 10.0 Extended Update Support
    • < 0:1.24.11-1.el10_0.4
    • 0:1.24.11-1.el10_0.4
    Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support
    • < 0:1.10.4-4.el7_9.3
    • 0:1.10.4-4.el7_9.3
    Red HatRed Hat Enterprise Linux 8
    • < 0:1.16.1-7.el8_10.3
    • 0:1.16.1-7.el8_10.3
    Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
    • < 0:1.16.1-4.el8_4.2
    • 0:1.16.1-4.el8_4.2
    Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
    • < 0:1.16.1-4.el8_4.2
    • 0:1.16.1-4.el8_4.2
    Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
    • < 0:1.16.1-4.el8_6.3
    • 0:1.16.1-4.el8_6.3
    Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
    • < 0:1.16.1-4.el8_6.3
    • 0:1.16.1-4.el8_6.3
    Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service
    • < 0:1.16.1-5.el8_8.3
    • 0:1.16.1-5.el8_8.3
    Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions
    • < 0:1.16.1-5.el8_8.3
    • 0:1.16.1-5.el8_8.3
    Red HatRed Hat Enterprise Linux 9
    • < 0:1.22.12-7.el9_8.4
    • 0:1.22.12-7.el9_8.4
    Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions
    • < 0:1.18.4-8.el9_2.3
    • 0:1.18.4-8.el9_2.3
    Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions
    • < 0:1.22.1-4.el9_4.3
    • 0:1.22.1-4.el9_4.3
    Red HatRed Hat Enterprise Linux 9.6 Extended Update Support
    • < 0:1.22.12-5.el9_6.3
    • 0:1.22.12-5.el9_6.3
    gstreamergstreamer
    • ≤ 1.28.6
    • —

    Vendors and products

    Affected operating systems

    Affected operating systems
    Linuxredhatenterprise_linux10.0
    Linuxredhatenterprise_linux7.0
    Linuxredhatenterprise_linux8.0
    Linuxredhatenterprise_linux9.0
    Linuxdebiangst-plugins-good1.0bookworm
    Linuxubuntugst-plugins-good1.0bionic
    Linuxubuntugst-plugins-good1.0focal
    Linuxubuntugst-plugins-good1.0jammy
    Linuxubuntugst-plugins-good1.0noble
    Linuxubuntugst-plugins-good1.0resolute
    Linuxubuntugst-plugins-good1.0xenial

    Weakness classes (CWE)

    • CWE-191Integer Underflow (Wrap or Wraparound)

      Base

      The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

      Entry at MITRE CWE-191

    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

      Show 2 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:70803

      Source identifier: secalert@redhat.com

    2. Record modifiedRed Hat

      Show 2 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:70584

      Source identifier: secalert@redhat.com

    3. Record modifiedRed Hat

      Show 2 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:70264

      Source identifier: secalert@redhat.com

    4. Record modifiedRed Hat

      Show 2 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:68642

      Source identifier: secalert@redhat.com

    5. Record modifiedRed Hat

      Show 2 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:68644

      Source identifier: secalert@redhat.com

    Show 7 older changes

    1. Record modifiedRed Hat

      Show 2 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:68645

      Source identifier: secalert@redhat.com

    2. Record modifiedRed Hat

      Show 22 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/2026/73xxx/CVE-2026-73433.json">CVE-2026-73433</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:55434
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:55436
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:56966
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:65959
      Referenceadded
      —
      https://access.redhat.com/security/cve/CVE-2026-73433
      Referenceadded
      —
      https://bugzilla.redhat.com/show_bug.cgi?id=2514801
      Referenceadded
      —
      https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231
      Referenceadded
      —
      https://gstreamer.freedesktop.org/security/sa-2026-0072.html
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:55434
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:55436
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:56966
      —
      Referenceremoved
      https://access.redhat.com/security/cve/CVE-2026-73433
      —
      Referenceremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2514801
      —
      Referenceremoved
      https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231
      —
      Referenceremoved
      https://gstreamer.freedesktop.org/security/sa-2026-0072.html
      —
      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2026:55434 Types: Third Party Advisory
      —
      Reference typeremoved
      https://access.redhat.com/errata/RHSA-2026:55436 Types: Third Party Advisory
      —
      Reference typeremoved
      https://access.redhat.com/security/cve/CVE-2026-73433 Types: Third Party Advisory
      —
      Reference typeremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2514801 Types: Issue Tracking, Third Party Advisory
      —
      Reference typeremoved
      https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231 Types: Issue Tracking
      —
      Reference typeremoved
      https://gstreamer.freedesktop.org/security/sa-2026-0072.html Types: Patch, Vendor Advisory
      —

      Source identifier: secalert@redhat.com

    3. Record modifiedRed Hat

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:56966
      Affected versions (publisher)changed
      gst-plugins-good, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 (+2)
      gst-plugins-good, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8 (+2)

      Source identifier: secalert@redhat.com

    4. Initial analysis by NVDNVD

      Newly listed as affected:
      Show 7 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Product configurationadded
      —
      OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:* versions up to (including) 1.28.6
      Reference typeadded
      —
      Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:55434 Types: Third Party Advisory
      Reference typeadded
      —
      Red Hat, Inc.: https://access.redhat.com/errata/RHSA-2026:55436 Types: Third Party Advisory
      Reference typeadded
      —
      Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-73433 Types: Third Party Advisory
      Reference typeadded
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      Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2514801 Types: Issue Tracking, Third Party Advisory
      Reference typeadded
      —
      Red Hat, Inc.: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231 Types: Issue Tracking
      Reference typeadded
      —
      Red Hat, Inc.: https://gstreamer.freedesktop.org/security/sa-2026-0072.html Types: Patch, Vendor Advisory

      Source identifier: nvd@nist.gov

    5. Record modifiedRed Hat

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:55436
      Affected versions (publisher)changed
      gst-plugins-good, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 (+2)
      gst-plugins-good, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 (+2)

      Source identifier: secalert@redhat.com

    6. Record modifiedRed Hat

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:55434
      Affected versions (publisher)changed
      gst-plugins-good, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 (+2)
      gst-plugins-good, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 (+2)

      Source identifier: secalert@redhat.com

    7. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: no

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-73433","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"version":"2.0.3","timestamp":"2026-08-14T21:57:51.529936Z"}

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

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