High severity · published Nov 26, 2025
CVE-2025-64330
Suricata is vulnerable to a heap buffer overflow on verdict
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
suricata · OISF
< 7.0.13; < 8.0.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64330
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64330
Patch
https://github.com/OISF/suricata/commit/482e5eac9218d007adbe2410d6c00173368ce947
Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-83v7-gm34-f437
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