Network Intrusion Detection System Vulnerability in Suricata
CVE-2026-45762

7.5HIGH

Key Information:

Vendor

Oisf

Status
Suricata
Vendor
CVE Published:
10 September 2026

What is CVE-2026-45762?

Suricata, a prominent network intrusion detection and prevention system, exhibited an improper handling of IP defragmentation. This vulnerability allowed crafted fragmented IPv4/IPv6 traffic to incorrectly link IPv6 fragments with IPv4 defragmentation trackers. The resulting interaction could lead to a crash of the service, causing denial of service. It is crucial for users to upgrade to Suricata versions 7.0.16 or 8.0.5, which contain the necessary fixes. For users operating Suricata with AF_PACKET, enabling the 'defrag' option could serve as a workaround to mitigate this issue.

Affected Version(s)

suricata >= 8.0.0, < 8.0.5 < 8.0.0, 8.0.5

suricata < 7.0.16 < 7.0.16

References

https://github.com/OISF/suricata/security/advisories/GHSA...
x_refsource_CONFIRM
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-rel...
x_refsource_MISC
https://redmine.openinfosecfoundation.org/issues/8510
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.