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CVE-2026-22259

Suricata dnp3: unbounded transaction growth

Published: Jan 27, 2026Updated: Jan 30, 2026 Sources: CVE List NVD BDUCWE-400
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 60.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-400CWE-770

Affected Products

suricataOISF
On-premNetwork Device
Networking Infrastructure / firewall
РОСА ХРОМАО «НТЦ ИТ РОСА»
On-prem
Operating Systems / linux-distro
SuricataOpen Information Security Foundation
On-prem
Security Products / vuln-mgmt-scanner
Межсетевой экран "Ideco UTM"ООО "Айдеко Софтвер"
On-prem
Networking Infrastructure / firewall
suricataoisf
On-premNetwork Device
Networking Infrastructure / firewall
oisfoss-projectNetworking Infrastructureaka suricata, libhtp, suricata-update
ао «нтц ит роса»commercialRUOperating Systems
open information security foundationoss-projectSecurity Productsaka ofis, suricata, libhtp
ооо "айдеко софтвер"commercialRUNetworking Infrastructureaka aidco software, айде́ко софтвер

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9
github.com
https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e
github.com
https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942
github.com
and 7 more references View all →

Timeline

Published
Jan 27, 2026
Last Updated
Jan 30, 2026

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