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  4. CVE 2026 116743 libyal libmsiecf through 20260525 double free via
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Back to active CVEs
Medium · CVSS 6.8CVE-2026-116743

libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_dataCVE-2026-116743

Answer in brief

CVE-2026-116743 records a Medium severity (CVSS 6.8) vulnerability in libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_data. The current sources do not mark it as known exploited. The current feed maps libyal/libmsiecf (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 Oct 26, 2026Updated Oct 26, 2026Source checked Oct 26, 2026First seen by HOL Oct 26, 2026Material review Oct 26, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-415
Source
CVE List V5
Source checked
Oct 26, 2026
References
6 linked sources
Open source record

Key facts

Risk
Medium · CVSS 6.8
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 6.8. 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 libyal/libmsiecf (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
libyal/libmsiecfgeneric>=0 <=20260525Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for libyal/libmsiecf.
  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

    Oct 26, 2026

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

  2. Source modified

    Oct 26, 2026

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

  3. First seen by HOL

    Oct 26, 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

libyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat file whose recovered partial record has an oversized unknown_offset, crashing forensic tools processing it.

Quoted source text, attributed separately from HOL analysis.