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Back to active CVEs
Medium · CVSS 5.8CVE-2026-120457

libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension DecoderCVE-2026-120457

Answer in brief

CVE-2026-120457 records a Medium severity (CVSS 5.8) vulnerability in libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder. The current sources do not mark it as known exploited. The current feed maps Deutsches Klimarechenzentrum/libaec (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-196
Source
CVE List V5
Source checked
Nov 2, 2026
References
6 linked sources
Open source record

Key facts

Risk
Medium · CVSS 5.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Deutsches Klimarechenzentrum/libaec (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Deutsches Klimarechenzentrum/libaecgeneric>=0 <=1.1.7Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Deutsches Klimarechenzentrum/libaec.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 2, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencehackmd.io
  • Source referencevulncheck.com
Upstream source description

libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.

Quoted source text, attributed separately from HOL analysis.