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VulnerabilityPublished

CVE-2026-46352: OISF suricata · Deadlock

Affects OISF suricataSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 8.0.5 soon.

Data as of 31 Oct 2026, 20:20 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.0.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.

What to do

Upgrade suricata and oisf/suricata to 8.0.5.

Affected software

ProductAffectedFixed in
OISFsuricataAffected
  • >=8.0.0 <8.0.5
Fixed in
  • 8.0.5
GitHuboisf/suricatapkg:github/oisf/suricataOther threatsAffected
  • >=8.0.0 <8.0.5
Fixed in
  • 8.0.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Suricata to version 8.0.5 or later, where the deadlock issue in IP defragmentation is fixed. No known workarounds are available, so patching is the recommended remediation.

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.

References

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