Vulnerability in The GNU C Library Glibc
CVE-2026-97399
The strncasecmp function in the GNU C Library 2.24 and later optimized for the Power8 architecture may read one byte beyond the input size limit, which may crash a program when that byte is not readable. This condition may happen when the input strings to the strncasecmp function are attacker controlled in an application and they match all the way up to the edge of their page and the neighbouring page is either not mapped or is not readable.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (issue-tracking)
- 3ff69d7a-14f2-4f67-a097-88dee7810d18 (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-97399?
- CVE-2026-97399 is a low-severity vulnerability in The GNU C Library Glibc, classified under Buffer Over-read. CVSS score: 3.7/10. Published 2026-09-28.
- How severe is CVE-2026-97399?
- Low severity. CVSS v3 base score is 3.7 out of 10.