What is CVE-2025-64333?

CVE-2025-64333 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-2025-64333?

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

Buffer overflow in Oisf Suricata

CVE-2025-64333

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, a large HTTP content type, when logged can cause a stack overflow cr…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (22.9th 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-537h-xxmx-v87m (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2025-64333?: CVE-2025-64333 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-2025-64333?: High severity. CVSS v3 base score is 7.5 out of 10.