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Vulnerabilities

Security fix · CVE-2026-54240

libde265 is an open source implementation of the h.265 video codec.

Published Sep 11, 2026 · catalog updated Oct 23, 2026 · libde265 is an open

Open the advisory

Exploitation likelihood is not on this record for CVE-2026-54240. A missing EPSS score is not a low risk. Compare libde265 is an open with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (libde265 is an open).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
High7.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Not in the current FIRST EPSS dataset
Remediation
Advisory link
Affected products
Alpine:v3.24 libde265

libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Alpine:v3.24 libde2650 → 1.1.3-r0

How to fix CVE-2026-54240

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for CVE-2026-54240. A missing EPSS score is not a low risk. Compare libde265 is an open with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 1.1.3-r0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is absent from the current FIRST dataset. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 11, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.

  2. Oct 23, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    libde265 fixed in 1.1.3-r0

  3. Oct 23, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    libde265 fixed in 1.1.3-r0

  4. Oct 23, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.

Sources

  • CVE.orgVulnerability recordCVE-2026-54240

    Official CVE identifier

    cve.org
  • OpenSSF OSV / OSV ScannerPackage advisoryALPINE-CVE-2026-54240
    osv.dev
  • Trivy Vulnerability DBPackage advisoryALPINE-CVE-2026-54240

    libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or wri

    osv.dev

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.