# CVE-2026-45765

## Summary

- **CVE ID:** CVE-2026-45765
- **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-400, CWE-770
- **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, DNP3 reassembly could buffer data without sufficient parser-level bounds. Crafted DNP3 traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable DNP3 (which is not enabled by default) if it is not needed, and/or define a limited `stream.reassembly.depth` (0 or absent is unlimited).

## Affected Products

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

## References

- [CNA](https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj)
- [CNA](https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315)
- [CNA](https://redmine.openinfosecfoundation.org/issues/8460)

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