Vulnerability · Published Sep 10, 2026 · Assigned by GitHub_M
CVE-2026-45747Suricata lua/tls: null dereference in TlsGetCertInfo
High 7.5
In plain English
A high-severity null pointer dereference in suricata from OISF. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | suricata | no fix listed | DEBIAN-CVE-2026-45747 |
| Debian:14 | suricata | 1:8.0.1-1 | DEBIAN-CVE-2026-45747 |
| Ubuntu:22.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-45747 |
| Ubuntu:24.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-45747 |
| Ubuntu:26.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-45747 |
| Ubuntu:26.10 | suricata | no fix listed | UBUNTU-CVE-2026-45747 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/OISF/suricata/security/advisories/GHSA-vfc5-9844-rmhv x_refsource_CONFIRM
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315 x_refsource_MISC
- https://redmine.openinfosecfoundation.org/issues/6286 x_refsource_MISC