# CVE-2026-45747

## Summary

- **CVE ID:** CVE-2026-45747
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-476
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## 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 (< 7.0.16)

## References

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

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._