What is CVE-2025-64334?

CVE-2025-64334 is a high-severity vulnerability in Oisf Suricata, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-11-26.

How severe is CVE-2025-64334?

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

Resource exhaustion in Oisf Suricata

CVE-2025-64334

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, compressed HTTP data can lead to unbounded memory growth during decompression. This issue has been patched in version 8.0.2. A workaround involves disabling LZMA decompression or limiting response-body-limit size.

Published 2025-11-26 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.004 (26.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Oisf Suricata — versions >= 8.0.0, < 8.0.2

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/OISF/suricata/security/advisories/GHSA-r5jf-v2gx-gx8w (Third Party Advisory)
github.com/OISF/suricata/commit/00f04daa3a44928dfdd0003cb9735469272c94a1 (Patch)

Frequently asked questions

What is CVE-2025-64334?: CVE-2025-64334 is a high-severity vulnerability in Oisf Suricata, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-11-26.
How severe is CVE-2025-64334?: High severity. CVSS v3 base score is 7.5 out of 10.