Use-after-free in Suricata - CVE-2026-45751
Published: June 3, 2026
Vulnerability identifier: #VU133273
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45751
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to use-after-free in the inspection-buffer helper when processing specific network traffic with a chained transform that causes the backing buffer to be reallocated. A remote attacker can trigger the vulnerable traffic processing to cause a denial of service.
Exploitation requires a specific but not malicious rule.
Affected software
Suricata
How to mitigate CVE-2026-45751
Install security update from vendor's website.
Suricata - addressed in versions 7.0.16, 8.0.5