CVE-2026-4438 PUBLISHED CVSS 5.400000095367432 MEDIUM

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.

EPSS 0.03% · 7.8th percentile

Risk Scores

CVSS v3.1
5.400000095367432
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
0.03%
7.8th percentile

Affected Products

VendorProductVersions
The GNU C Libraryglibc2.34

Timeline

References

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