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9.8 Critical

CVE-2026-5450 Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to…

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.

Affected products and versions

Product Affected versions Fixed in
glibc 2.7 2.7 → latest No fix stated
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.5 → < 3.1.6 3.1.6
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.5 → < 3.1.6 3.1.6
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.5 → < 3.1.6 3.1.6

References

Timeline

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The 35 CVEs of glibc →
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