Bug 2531990 (CVE-2026-45765) - CVE-2026-45765 Suricata: Suricata: Denial of Service via unbounded DNP3 reassembly
Summary: CVE-2026-45765 Suricata: Suricata: Denial of Service via unbounded DNP3 reass...
Keywords:
Status: NEW
Alias: CVE-2026-45765
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2533883 2533885
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-11 17:59 UTC by OSIDB Bzimport
Modified: 2026-09-15 15:14 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-11 17:59:08 UTC
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).


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