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Security Advisories

CVE-2026-5450

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-5450

Severity

9.8

Critical

CVSS V3

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Summary

scanf %mc off-by-one heap buffer overflow

Description

Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.

References

Affected packages

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