MEDIUM 6.1 Microsoft

CVE-2026-35199

SymCrypt SymCryptXmssSign function - Heap overflow via 64->32-bit leaf-count truncation

Microsoft Security Update 2026-Apr: SymCrypt SymCryptXmssSign function - Heap overflow via 64->32-bit leaf-count truncation

Affected Products

azl3 SymCrypt 103.8.0-1 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35199
https://nvd.nist.gov/vuln/detail/CVE-2026-35199

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-08-04

This medium severity vulnerability with a CVSS score of 6.1 was published on 2026-04-14 via Microsoft. Affected: azl3 SymCrypt 103.8.0-1 on Azure Linux 3.0.

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