DNP3 Reassembly Buffer Vulnerability in Suricata Network Security Product
CVE-2026-45765

7.5HIGH

Key Information:

Vendor

Oisf

Status
Suricata
Vendor
CVE Published:
10 September 2026

What is CVE-2026-45765?

The Suricata network security system is susceptible to a vulnerability arising from improper handling of DNP3 reassembly, which could lead to excessive memory consumption upon processing maliciously crafted DNP3 traffic. If triggered, this condition may result in service interruption. Users are advised to upgrade to versions 7.0.16 or 8.0.5, which contain the necessary fix. As a precautionary measure, it is recommended to disable DNP3 if not in use and to configure a limited 'stream.reassembly.depth' to mitigate potential risks.

Affected Version(s)

suricata >= 8.0.0, < 8.0.5 < 8.0.0, 8.0.5

suricata < 7.0.16 < 7.0.16

References

https://github.com/OISF/suricata/security/advisories/GHSA...
x_refsource_CONFIRM
https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-rel...
x_refsource_MISC
https://redmine.openinfosecfoundation.org/issues/8460
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.