# CVE-2026-45751

## Summary

- **CVE ID:** CVE-2026-45751
- **Severity:** MEDIUM
- **CVSS Score:** 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-416
- **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 versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

## Affected Products

- OISF — suricata (< 7.0.16)
- OISF — suricata (>= 8.0.0, < 8.0.5)

## References

- [CNA](https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx)
- [CNA](https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315)
- [CNA](https://redmine.openinfosecfoundation.org/issues/8537)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._