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Fencer Vulns
high 7.5

CVE-2025-64330 json

Suricata is vulnerable to a heap buffer overflow on verdict

published 2025-11-26 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-199772

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

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.

Patch / fix

  • oisf suricata 7.0.13, 8.0.2
  • openinfosecfoundation suricata 7.0.13, 8.0.2
  • suricata-ids suricata 7.0.13, 8.0.2
  • suricata Debian 13 1:7.0.10-1+deb13u2
  • suricata Debian 14 1:8.0.2-1

debian advisories DEBIAN-CVE-2025-64330

  • suricata openSUSE Tumbleweed 8.0.3-1.1

opensuse advisories openSUSE-SU-2026:10082-1

  • suricata Alpine 3.24 8.0.2-r0

alpine advisories ALPINE-CVE-2025-64330

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-64330 updated cvss 7.5

Suricata: Suricata: Single byte read heap overflow leads to denial of service

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • OISF suricata

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.