CVE-2025-55131 (GCVE-0-2025-55131)

Vulnerability from cvelistv5 – Published: 2026-01-20 20:41 – Updated: 2026-06-30 12:07
VLAI
Summary
A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the `vm` module with the timeout option. Under specific timing conditions, buffers allocated with `Buffer.alloc` and other `TypedArray` instances like `Uint8Array` may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.
Severity
7.1 (High)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
URL Tags
https://nodejs.org/en/blog/vulnerability/december…
https://access.redhat.com/security/cve/CVE-2025-55131 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2431350 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:2899 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:1843 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:1842 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2422 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2421 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2420 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2768 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2767 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2864 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2783 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2782 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2781 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7386 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7387 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6402 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:6431 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
nodejs node Affected: 20.19.6 , ≤ 20.19.6 (semver)
Affected: 22.21.1 , ≤ 22.21.1 (semver)
Affected: 24.12.0 , ≤ 24.12.0 (semver)
Affected: 25.2.1 , ≤ 25.2.1 (semver)
Affected: 4.0 , < 4.* (semver)
Affected: 5.0 , < 5.* (semver)
Affected: 6.0 , < 6.* (semver)
Affected: 7.0 , < 7.* (semver)
Affected: 8.0 , < 8.* (semver)
Affected: 9.0 , < 9.* (semver)
Affected: 10.0 , < 10.* (semver)
Affected: 11.0 , < 11.* (semver)
Affected: 12.0 , < 12.* (semver)
Affected: 13.0 , < 13.* (semver)
Affected: 14.0 , < 14.* (semver)
Affected: 15.0 , < 15.* (semver)
Affected: 16.0 , < 16.* (semver)
Affected: 17.0 , < 17.* (semver)
Affected: 18.0 , < 18.* (semver)
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Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.