Vulnerability in Gnu Glibc
CVE-2026-3904
Calling NSS-backed functions that support caching via nscd may call the nscd client side code and in the GNU C Library version 2.36 under high load on x86_64 systems, the client may call memcmp on inputs that are concurrently modified b…
EPSS: 0.001 (4.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Gnu Glibc
- The Gnu C Library Glibc — versions 2.35
Weakness classification (CWE)
References
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (Third Party Advisory)
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (Exploit, Patch, Issue Tracking)
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (Patch)
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2026-3904?
- CVE-2026-3904 is a medium-severity vulnerability in Gnu Glibc, classified under Race Condition within a Thread. CVSS score: 6.2/10. Published 2026-03-11.
- How severe is CVE-2026-3904?
- Medium severity. CVSS v3 base score is 6.2 out of 10.