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Vulnerability record · CVE-2026-0915 · published 15 January 2026

CVE-2026-0915: Gnu glibc use of uninitialized resource vulnerability

Gnu · Glibc

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.

7.5 CVSS 3.1 High EPSS 0.63% · top 52.1% CWE-908 · Use of uninitialized resource
7.5CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sourceware.org/bugzilla/show_bug.cgi?id=33802 Broken Link
http://www.openwall.com/lists/oss-security/2026/01/16/6 Mailing List
https://sourceware.org/bugzilla/show_bug.cgi?id=33802 Broken Link

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-0915), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.