HighCVE-2025-4953

    Podman: build context bind mount (CVE-2025-4953)

    Published Last modified Sources: Red Hat, CVE.org, Msrc Update Guide, OSV

    What is affected, what to do

    A flaw was found in Podman. In a Containerfile or Podman, data written to RUN --mount=type=bind mounts during the podman build is not discarded.

    Update Red Hat Enterprise Linux 8 to version 8100020250911075811.afee755d, Red Hat OpenShift Container Platform 4.12 to version 3:4.2.0-15.rhaos4.12.el9, Red Hat OpenShift Container Platform 4.12 to version 412.86.202601061735-0.

    Affected
    • Red Hat Enterprise Linux 8 lt *..8100020250911075811.afee755d
    • Red Hat OpenShift Container Platform 4.12 lt *..3:4.2.0-15.rhaos4.12.el9
    • Red Hat OpenShift Container Platform 4.12 lt *..412.86.202601061735-0
    • Red Hat OpenShift Container Platform 4.13 lt *..1:1.29.1-5.rhaos4.13.el9
    • Red Hat OpenShift Container Platform 4.13 lt *..3:2.1.7-5.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..1:1.4.0-5.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:1.26.5-26.rhaos4.13.giteb3d487.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:1.26.0-7.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:2.2.24-5.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:2.15.0-10.rhaos4.13.el9
    • Red Hat OpenShift Container Platform 4.13 lt *..0:4.13.0-202410181847.p0.g53fd427.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:4.13.0-202410181847.p0.gd2acdd5.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:4.13.0-202410181847.p0.g1397e80.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:4.13.0-202410181847.p0.gd192e90.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:4.13.0-202410181847.p0.g36754b7.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..3:4.4.1-15.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..4:1.1.14-2.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..2:1.11.3-4.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..1:1.29.5-1.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..0:5.14.0-284.109.1.el9_2
    • Red Hat OpenShift Container Platform 4.13 lt *..0:5.14.0-284.109.1.rt14.394.el9_2
    • Red Hat OpenShift Container Platform 4.13 lt *..3:4.4.1-16.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 lt *..413.92.202511261311-0
    • Red Hat OpenShift Container Platform 4.14 lt *..414.92.202512031525-0
    • Red Hat OpenShift Container Platform 4.15 lt *..415.92.202512100122-0
    • Red Hat OpenShift Container Platform 4.16 lt *..4:4.9.4-16.rhaos4.16.el8
    • Red Hat OpenShift Container Platform 4.16 lt *..416.94.202512030118-0
    • Red Hat OpenShift Container Platform 4.17 lt *..417.94.202511260612-0
    • Red Hat OpenShift Container Platform 4.18 lt *..5:5.2.2-2.rhaos4.18.el8
    • Red Hat OpenShift Container Platform 4.18 lt *..418.94.202512022246-0
    Fixed in
    • Red Hat Enterprise Linux 8 8100020250911075811.afee755d
    • Red Hat OpenShift Container Platform 4.12 3:4.2.0-15.rhaos4.12.el9
    • Red Hat OpenShift Container Platform 4.12 412.86.202601061735-0
    • Red Hat OpenShift Container Platform 4.13 1:1.29.1-5.rhaos4.13.el9
    • Red Hat OpenShift Container Platform 4.13 3:2.1.7-5.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 1:1.4.0-5.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 0:1.26.5-26.rhaos4.13.giteb3d487.el8
    • Red Hat OpenShift Container Platform 4.13 0:1.26.0-7.el8
    • Red Hat OpenShift Container Platform 4.13 0:2.2.24-5.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 0:2.15.0-10.rhaos4.13.el9
    • Red Hat OpenShift Container Platform 4.13 0:4.13.0-202410181847.p0.g53fd427.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 0:4.13.0-202410181847.p0.gd2acdd5.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 0:4.13.0-202410181847.p0.g1397e80.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 0:4.13.0-202410181847.p0.gd192e90.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 0:4.13.0-202410181847.p0.g36754b7.assembly.stream.el8
    • Red Hat OpenShift Container Platform 4.13 3:4.4.1-15.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 4:1.1.14-2.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 2:1.11.3-4.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 1:1.29.5-1.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 0:5.14.0-284.109.1.el9_2
    • Red Hat OpenShift Container Platform 4.13 0:5.14.0-284.109.1.rt14.394.el9_2
    • Red Hat OpenShift Container Platform 4.13 3:4.4.1-16.rhaos4.13.el8
    • Red Hat OpenShift Container Platform 4.13 413.92.202511261311-0
    • Red Hat OpenShift Container Platform 4.14 414.92.202512031525-0
    • Red Hat OpenShift Container Platform 4.15 415.92.202512100122-0
    • Red Hat OpenShift Container Platform 4.16 4:4.9.4-16.rhaos4.16.el8
    • Red Hat OpenShift Container Platform 4.16 416.94.202512030118-0
    • Red Hat OpenShift Container Platform 4.17 417.94.202511260612-0
    • Red Hat OpenShift Container Platform 4.18 5:5.2.2-2.rhaos4.18.el8
    • Red Hat OpenShift Container Platform 4.18 418.94.202512022246-0

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

    Metrics

    7.4

    Priority

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

    Source: NVD, CVSS v3

    7.4

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: Red Hat, CVE.org, Msrc Update Guide, OSV

    0.6 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 50.5

    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
    68.32 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
    7.4 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
    7.4
    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
    0.6 %
    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
    50.5
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    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
    CISA assessment (SSVC)
    Exploitation: none known · not automatable · Technical impact: total
    Source: CISA Vulnrichment, as of 16 September 2025
    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-378

    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 Podman. In a Containerfile or Podman, data written to RUN --mount=type=bind mounts during the podman build is not discarded. This issue can lead to files created within the container appearing in the temporary build context directory on the host, leaving the created files accessible.

    Source: redhat_csaf, cvelistv5, NVD (NIST), Microsoft Security Update Guide, OSV (Open Source Vulnerabilities), CVE.org (MITRE)

    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
    —podman
    • —
    • —
    Red HatRed Hat Enterprise Linux 10
    • —
    • —
    Red HatRed Hat Enterprise Linux 8
    • < 8100020250911075811.afee755d
    • 8100020250911075811.afee755d
    Red HatRed Hat Enterprise Linux 9
    • —
    • —
    Red HatRed Hat OpenShift Container Platform 4.12
    • < 412.86.202601061735-0
    • < 3:4.2.0-15.rhaos4.12.el9
    • 412.86.202601061735-0
    • 3:4.2.0-15.rhaos4.12.el9
    Red HatRed Hat OpenShift Container Platform 4.13
    • < 3:4.4.1-15.rhaos4.13.el8
    • < 0:1.26.0-7.el8
    • < 2:1.11.3-4.rhaos4.13.el8
    • < 0:5.14.0-284.109.1.rt14.394.el9_2
    • < 0:4.13.0-202410181847.p0.g1397e80.assembly.stream.el8
    • < 1:1.29.5-1.rhaos4.13.el8
    • < 0:2.15.0-10.rhaos4.13.el9
    • < 0:4.13.0-202410181847.p0.gd192e90.assembly.stream.el8
    • < 1:1.4.0-5.rhaos4.13.el8
    • < 3:2.1.7-5.rhaos4.13.el8
    • < 0:4.13.0-202410181847.p0.g36754b7.assembly.stream.el8
    • < 0:1.26.5-26.rhaos4.13.giteb3d487.el8
    • < 0:4.13.0-202410181847.p0.gd2acdd5.assembly.stream.el8
    • < 1:1.29.1-5.rhaos4.13.el9
    • < 0:5.14.0-284.109.1.el9_2
    • < 3:4.4.1-16.rhaos4.13.el8
    • < 413.92.202511261311-0
    • < 0:2.2.24-5.rhaos4.13.el8
    • < 4:1.1.14-2.rhaos4.13.el8
    • < 0:4.13.0-202410181847.p0.g53fd427.assembly.stream.el8
    • 3:4.4.1-15.rhaos4.13.el8
    • 0:1.26.0-7.el8
    • 2:1.11.3-4.rhaos4.13.el8
    • 0:5.14.0-284.109.1.rt14.394.el9_2
    • 0:4.13.0-202410181847.p0.g1397e80.assembly.stream.el8
    • 1:1.29.5-1.rhaos4.13.el8
    • 0:2.15.0-10.rhaos4.13.el9
    • 0:4.13.0-202410181847.p0.gd192e90.assembly.stream.el8
    • 1:1.4.0-5.rhaos4.13.el8
    • 3:2.1.7-5.rhaos4.13.el8
    • 0:4.13.0-202410181847.p0.g36754b7.assembly.stream.el8
    • 0:1.26.5-26.rhaos4.13.giteb3d487.el8
    • 0:4.13.0-202410181847.p0.gd2acdd5.assembly.stream.el8
    • 1:1.29.1-5.rhaos4.13.el9
    • 0:5.14.0-284.109.1.el9_2
    • 3:4.4.1-16.rhaos4.13.el8
    • 413.92.202511261311-0
    • 0:2.2.24-5.rhaos4.13.el8
    • 4:1.1.14-2.rhaos4.13.el8
    • 0:4.13.0-202410181847.p0.g53fd427.assembly.stream.el8
    Red HatRed Hat OpenShift Container Platform 4.14
    • < 414.92.202512031525-0
    • 414.92.202512031525-0
    Red HatRed Hat OpenShift Container Platform 4.15
    • < 415.92.202512100122-0
    • 415.92.202512100122-0
    Red HatRed Hat OpenShift Container Platform 4.16
    • < 4:4.9.4-16.rhaos4.16.el8
    • < 416.94.202512030118-0
    • 4:4.9.4-16.rhaos4.16.el8
    • 416.94.202512030118-0
    Red HatRed Hat OpenShift Container Platform 4.17
    • < 417.94.202511260612-0
    • 417.94.202511260612-0
    Red HatRed Hat OpenShift Container Platform 4.18
    • < 5:5.2.2-2.rhaos4.18.el8
    • < 418.94.202512022246-0
    • 5:5.2.2-2.rhaos4.18.el8
    • 418.94.202512022246-0
    gogithub.com/containers/podman/v5
    • —
    • —

    Vendors and products

    Weakness classes (CWE)

    • CWE-378Creation of Temporary File With Insecure Permissions

      Base

      Opening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack.

      Entry at MITRE CWE-378

    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

      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/2025/4xxx/CVE-2025-4953.json">CVE-2025-4953</a>

      Source identifier: secalert@redhat.com

    2. Record modifiedRed Hat

      Show 33 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/2025/4xxx/CVE-2025-4953.json">CVE-2025-4953</a>
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2024:8690
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:15904
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:16724
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:16729
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:17669
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:22265
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:22275
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:22695
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:22724
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:22732
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:23113
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2025:2703
      Referenceadded
      —
      https://access.redhat.com/errata/RHSA-2026:0316
      Referenceadded
      —
      https://access.redhat.com/security/cve/CVE-2025-4953
      Referenceadded
      —
      https://bugzilla.redhat.com/show_bug.cgi?id=2367235
      Referenceadded
      —
      https://github.com/containers/podman/pull/25173
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2024:8690
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:15904
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:16724
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:16729
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:17669
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:22265
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:22275
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:22695
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:22724
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:22732
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:23113
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2025:2703
      —
      Referenceremoved
      https://access.redhat.com/errata/RHSA-2026:0316
      —
      Referenceremoved
      https://access.redhat.com/security/cve/CVE-2025-4953
      —
      Referenceremoved
      https://bugzilla.redhat.com/show_bug.cgi?id=2367235
      —
      Referenceremoved
      https://github.com/containers/podman/pull/25173
      —

      Source identifier: secalert@redhat.com

    3. Record modifiedRed Hat

      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 8, Red Hat OpenShift Container Platform 4.12 (+31)
      …, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4.12 (+31)

      Source identifier: secalert@redhat.com

    4. Record modifiedRed Hat

      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 8, Red Hat OpenShift Container Platform 4.12 (+32)
      …, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4.12 (+31)

      Source identifier: secalert@redhat.com

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