CVE-2026-4437

HIGH

7.5

Beschreibung

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, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

CVE Details

CVSS v3.1 Bewertung7.5

SchweregradHIGH

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

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht3/20/2026

Zuletzt geandert4/7/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

gnu:glibc

Schwachen (CWE)

CWE-125

Referenzen

https://sourceware.org/bugzilla/show_bug.cgi?id=34014(3ff69d7a-14f2-4f67-a097-88dee7810d18)

IOC Korrelationen

Keine Korrelationen erfasst

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