What’s Vulnerable › Vulnerabilities

CVE-2026-45747: Suricata lua/tls: null dereference in TlsGetCertInfo

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-09-10 · updated 2026-09-28
• Weakness: CWE-476

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 products

• OISF suricata: before 7.0.16 — fixed in 7.0.16

How to fix

Upgrade to a fixed version: OISF suricata 7.0.16. Check the vendor advisory for mitigations.

References

• https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
• https://github.com/OISF/suricata/security/advisories/GHSA-vfc5-9844-rmhv
• https://redmine.openinfosecfoundation.org/issues/6286
• https://redmine.openinfosecfoundation.org/issues/6286

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