CVE-2026-45762
Published:September 10, 2026
Updated:September 22, 2026
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's IP defragmentation tracker lookup did not verify that an existing tracker used the same IP address family as the packet being processed. Under crafted fragmented IPv4/IPv6 traffic, an IPv6 fragment could be associated with an IPv4 defragmentation tracker. This can lead to a remote packet-triggered crash and denial of service when Suricata performs the relevant defragmentation. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, if using Suricata as an IDS with AF_PACKET, enabling AF_PACKET's "defrag" option may prevent Suricata from seeing such fragmented packets.
Affected Packages
https://github.com/OISF/suricata.git (GITHUB):
Affected version(s) >=suricata-1.4beta2 <suricata-7.0.16Fix Suggestion:
Update to version suricata-7.0.16https://github.com/OISF/suricata.git (GITHUB):
Affected version(s) >=suricata-8.0.0-beta1 <suricata-8.0.5Fix Suggestion:
Update to version suricata-8.0.5Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Access of Resource Using Incompatible Type ('Type Confusion')
EPSS
Base Score:
0.44