CRITICAL 9.8 Microsoft
CVE-2026-5450
scanf %mc off-by-one heap buffer overflow
Microsoft Security Update 2026-Apr: scanf %mc off-by-one heap buffer overflow
Affected Products
- azl3 glibc 2.38-20 on Azure Linux 3.0
- cbl2 glibc 2.35-10
- azl3 glibc 2.38-19 on Azure Linux 3.0
- cbl2 glibc 2.35-10 on CBL Mariner 2.0
- cbl2 glibc 2.35-10 on CBL-Mariner 2.0
- azl3 glibc 2.38-21 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-5450
- https://nvd.nist.gov/vuln/detail/CVE-2026-5450
This critical severity vulnerability with a CVSS score of 9.8 was published on 2026-04-14 via Microsoft. Affected: azl3 glibc 2.38-20 on Azure Linux 3.0, cbl2 glibc 2.35-10, azl3 glibc 2.38-19 on Azure Linux 3.0 and 3 more.
Risk Timeline
CVE Disclosed2026-04-14 · 157 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-5450NVD / MITRE
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