What is CVE-2025-64344?

CVE-2025-64344 is a high-severity vulnerability in Oisf Suricata, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-11-26.

How severe is CVE-2025-64344?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Oisf Suricata

CVE-2025-64344

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overfl…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (21.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Oisf Suricata — versions < 7.0.13, < 8.0.2

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

https://github.com/OISF/suricata/security/advisories/GHSA-93fh-cgmc-w3rx (x_refsource_CONFIRM)
https://github.com/OISF/suricata/commit/e13fe6a90dba210a478148c4084f6f5db17c5b5a (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-64344?: CVE-2025-64344 is a high-severity vulnerability in Oisf Suricata, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-11-26.
How severe is CVE-2025-64344?: High severity. CVSS v3 base score is 7.5 out of 10.