MEDIUM 5.5 Microsoft
CVE-2026-39856
osslsigncode has an Out-of-Bounds Read via Unvalidated Section Bounds in PE Page Hash Calculation
Microsoft Security Update 2026-Apr: osslsigncode has an Out-of-Bounds Read via Unvalidated Section Bounds in PE Page Hash Calculation
Affected Products
- cbl2 osslsigncode 2.7-1 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-39856
- https://nvd.nist.gov/vuln/detail/CVE-2026-39856
This medium severity vulnerability with a CVSS score of 5.5 was published on 2026-04-14 via Microsoft. Affected: cbl2 osslsigncode 2.7-1 on CBL Mariner 2.0.
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