CVE-2026-39856: osslsigncode has an Out-of-Bounds Read via Unvalidated Section Bounds in PE Page Hash Calculation
Overview
- Severity
- Medium (CVSS 5.5)
- CVSS Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-04-12
- Last Updated
- 2026-04-13
- EPSS Score
- 0.02% (percentile: 6.1%)
Affected Products (1)
Open Source Software
- cbl2 osslsigncode 2.7-1 on CBL Mariner 2.0
Revision History
- 2026-04-12: Information published.
- 2026-04-13: Information published.