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CVE

CVE-2026-22259

Suricata dnp3: unbounded transaction growth
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CVE

CVE-2026-22259

Suricata dnp3: unbounded transaction growth

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).

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22259.json, https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e, https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942, https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9, https://nvd.nist.gov/vuln/detail/CVE-2026-22259, https://redmine.openinfosecfoundation.org/issues/8181

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00068%
EPSS Percentile
0.20607%
Introduced Version
0,9956286fb89f9cad9e9f95b99dc751f8666617b7
Fix Available
163bd652dfa92959e918a952429b939fa81f7b88,3bd9f773bdc65d7bede2f0576790a68fb68b7476

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