CVEvulnerability

CVE-2026-107730

5.5 MEDIUM Published 2026-10-08 Modified 2026-10-09 Official page ↗
Status
Deferred
Published
2026-10-08
Last modified
2026-10-09
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weaknesses
CWE-190

Description

SumatraPDF is a multi-format reader for Windows. In 3.7.0.22298, LitParseHeader() in src/LitDoc.cpp computes the attacker-controlled hdrLen + nPieces * 16 section offset using signed 32-bit arithmetic without validating the complete result. When the component values make that aggregate calculation overflow to a negative value, pointer construction reaches an invalid read in LitU32(), causing deterministic application termination. The supplied evidence does not demonstrate code execution, information disclosure, arbitrary read, or integrity impact. No fixed version is available as of this review.

Related

Weakness · CWE (1)

  • CWE-190 Integer Overflow or Wraparound weakness

References