Resource exhaustion in Oisf Suricata
CVE-2025-29917
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The bytes setting in the decode_base64 keyword is not properly limited. Due to this, signatures using the keyword and setting can cause large memory allocations of up to 4 GiB per thread. This vulnerability is fixed in 7.0.9.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (17.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Oisf Suricata — versions < 7.0.9
Weakness classification (CWE)
References
- github.com/OISF/suricata/security/advisories/GHSA-x8c9-8553-j9px (Vendor Advisory)
- github.com/OISF/suricata/commit/32d0bd2bbb4d486623dec85a94952fde2515f2f0 (Patch)
- redmine.openinfosecfoundation.org/issues/7613 (Permissions Required)
Frequently asked questions
- What is CVE-2025-29917?
- CVE-2025-29917 is a medium-severity vulnerability in Oisf Suricata, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.2/10. Published 2025-04-10.
- How severe is CVE-2025-29917?
- Medium severity. CVSS v3 base score is 6.2 out of 10.