CVE-2026-45765
Publication date 14 September 2026
Last updated 14 September 2026
Ubuntu priority
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).
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-45765
- https://github.com/OISF/suricata/security/advisories/GHSA-m8x4-c78g-r4vj
- https://redmine.openinfosecfoundation.org/issues/8462 (suricata-7.0.16)
- https://redmine.openinfosecfoundation.org/issues/8461 (suricata-8.0.5)
- https://github.com/OISF/suricata/commit/8c807a86c9335de2434c675787e3fab8f5b114d2 (suricata-7.0.16)
- https://github.com/OISF/suricata/commit/71210ab1a841b2697047236b873643b51b03558f (suricata-7.0.16)
- https://github.com/OISF/suricata/commit/a1de91bf92e8adc1db4d55641c0b2ce2beecc2e4 (suricata-7.0.16)
- https://github.com/OISF/suricata/commit/2a4947f0c0791b38b951b4140cb49bb814945045 (suricata-8.0.5)
- https://github.com/OISF/suricata/commit/d869f782f737515a0c406bbb86a91d5ff626f3e1 (suricata-8.0.5)
- https://github.com/OISF/suricata/commit/d62b7cd98054ab03156e7ce2cac15166b46ab391 (suricata-8.0.5)
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
- https://redmine.openinfosecfoundation.org/issues/8460