Vulnerability · Published Nov 26, 2025 · Assigned by GitHub_M
CVE-2025-64330Suricata is vulnerable to a heap buffer overflow on verdict
High 7.5
In plain English
A high-severity heap 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 0.4% (higher than 34% 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 single byte read heap overflow when logging the verdict in eve.alert and eve.drop records can lead to crashes. This requires the per packet alert queue to be filled with alerts and then followed by a pass rule. This issue has been patched in versions 7.0.13 and 8.0.2. To reduce the likelihood of this issue occurring, the alert queue size a should be increased (packet-alert-max in suricata.yaml) if verdict is enabled.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | suricata | 8.0.2-r0 | ALPINE-CVE-2025-64330 |
| Debian:13 | suricata | 1:7.0.10-1+deb13u2 | DEBIAN-CVE-2025-64330 |
| Debian:14 | suricata | 1:8.0.2-1 | DEBIAN-CVE-2025-64330 |
| Ubuntu:22.04:LTS | suricata | no fix listed | UBUNTU-CVE-2025-64330 |
| Ubuntu:24.04:LTS | suricata | no fix listed | UBUNTU-CVE-2025-64330 |
| Ubuntu:25.10 | suricata | no fix listed | UBUNTU-CVE-2025-64330 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H