What’s Vulnerable › Vulnerabilities
CVE-2025-64333: Suricata is vulnerable to a stack overflow from big content-type
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-11-26 · updated 2026-10-18
- Weakness: CWE-121
Description
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 crashing Suricata. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves limiting stream.reassembly.depth to less then half the stack size. Increasing the process stack size makes it less likely the bug will trigger.
Affected products
- OISF suricata: before 7.0.13; from 8.0.0 before 8.0.2 — fixed in 7.0.13, 8.0.2
How to fix
Upgrade to a fixed version: OISF suricata 7.0.13, 8.0.2. Check the vendor advisory for mitigations.
References
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