Out-of-bounds write in Suricata - CVE-2026-45770
Published: June 3, 2026
Vulnerability identifier: #VU133270
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45770
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass the Lua sandbox.
The vulnerability exists due to out-of-bounds write in the Lua detection state when registering excessive flow variables in a Lua rule. A remote attacker can load a crafted Lua script or rule to bypass the Lua sandbox.
This requires an affected Lua script or rule to be loaded.
Affected software
Suricata
How to mitigate CVE-2026-45770
Install security update from vendor's website.
Suricata - update to 8.0.5