Vulnerability · Published Nov 26, 2025 · Assigned by GitHub_M
CVE-2025-64333Suricata is vulnerable to a stack overflow from big content-type
High 7.5
In plain English
A high-severity stack buffer overflow in suricata from OISF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | suricata | 8.0.2-r0 | ALPINE-CVE-2025-64333 |
| Debian:13 | suricata | 1:7.0.10-1+deb13u2 | DEBIAN-CVE-2025-64333 |
| Debian:14 | suricata | 1:8.0.2-1 | DEBIAN-CVE-2025-64333 |
| Ubuntu:22.04:LTS | suricata | no fix listed | UBUNTU-CVE-2025-64333 |
| Ubuntu:24.04:LTS | suricata | no fix listed | UBUNTU-CVE-2025-64333 |
| Ubuntu:25.10 | suricata | no fix listed | UBUNTU-CVE-2025-64333 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/OISF/suricata/security/advisories/GHSA-537h-xxmx-v87m x_refsource_CONFIRM