CVE-2026-5450

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 0.72%
EPSS Percentile: 53.06%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: 3ff69d7a-14f2-4f67-a097-88dee7810d18
Published: 21-Apr-2026 04:16
Last Modified: 14-Jul-2026 20:19
EPSS Date: 2026-10-20
CWE: CWE-122, CWE-787

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

gnu / glibc Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 2.7 · through (inclusive) 2.43
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

References

Last enrichment sync: 01-Nov-2026 19:22
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

glibc itself picked up fixes for a buffer overflow and a buffer underflow, CVE-2026-5928 and CVE-2026-5450, plus a change to keep it working with Linux 7.0 headers. Debian 13.7 Bundles 92 Security Advisories and Updates 106 Packages

CVE (19)

Products (18)

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