High severity · published Sep 16, 2026
CVE-2026-46352
Suricata defrag: fragmented encapsulated traffic with fragments can lead to deadlock
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, Suricata's IP defragmentation code could deadlock when processing fragmented traffic containing an encapsulated tunnel protocol whose payload is itself fragmented. Version 8.0.5 contains a fix. No known workarounds are available.
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)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
suricata · OISF
>= 8.0.0, < 8.0.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46352
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46352
Release Notes
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-rc34-46x6-mxxm
Permissions Required
https://redmine.openinfosecfoundation.org/issues/8550
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