Skip to content
NewA calmer, faster ZeroHour
VulnerabilityPoC6

CVE-2026-4438

CVSS 3.1
5.4 medium
EPSS
<1%p25
Published
·
Modified
Analyze CVE-2026-4438 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Description · NVD

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.

Vendors
gnu
Products
glibc
Weakness
CWE-20, CWE-88
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

1 story