High severity · published Jan 27, 2026
CVE-2026-22258
Suricata is a network IDS, IPS and NSM engine
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, crafted DCERPC traffic can cause Suricata to expand a buffer w/o limits, leading to memory exhaustion and the process getting killed. While reported for DCERPC over UDP, it is believed that DCERPC over TCP and SMB are also vulnerable. DCERPC/TCP in the default configuration should not be vulnerable as the default stream depth is limited to 1MiB. Versions 8.0.3 and 7.0.14 contain a patch. Some workarounds are available. For DCERPC/UDP, disable the parser. For DCERPC/TCP, the `stream.reassembly.depth` setting will limit the amount of data that can be buffered. For DCERPC/SMB, the `stream.reassembly.depth` can be used as well, but is set to unlimited by default. Imposing a limit here may lead to loss of visibility in SMB.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
Suricata · Oisf
before 7.0.14; 8.0.0 before 8.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22258
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-22258
Patch
https://github.com/OISF/suricata/commit/39d8c302af3422a096b75474a4f295a754ec6a74
Patch
https://github.com/OISF/suricata/commit/f82a388d0283725cb76782cf64e8341cab370830
Patch
https://github.com/OISF/suricata/security/advisories/GHSA-289c-h599-3xcx
Issue Tracking
https://redmine.openinfosecfoundation.org/issues/8182
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