CVEvulnerability

CVE-2026-23951

5.5 MEDIUM Published 2026-01-22 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-01-22
Last modified
2026-06-17
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-125, CWE-191, CWE-193

Description

SumatraPDF is a multi-format reader for Windows. All versions contain an off-by-one error in the validation code that only triggers with exactly 2 records, causing an integer underflow in the size calculation. This bug exists in PalmDbReader::GetRecord when opening a crafted Mobi file, resulting in an out-of-bounds heap read that crashes the app. There are no published fixes at the time of publication.

Affected configurations

• sumatrapdfreader sumatrapdf

Related

Weakness · CWE (3)

  • CWE-125 Out-of-bounds Read weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound) weakness
  • CWE-193 Off-by-one Error weakness

References