High severity · published Apr 2, 2026
CVE-2026-31937
Suricata dcerpc: quadratic complexity in dcerpc buffering
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Suricata is a network IDS, IPS and NSM engine. Prior to version 7.0.15, inefficiency in DCERPC buffering can lead to a performance degradation. This issue has been patched in version 7.0.15.
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)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
suricata · OISF
< 7.0.15 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31937
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31937
Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-86vg-w8vm-m3gg
Issue Tracking
https://redmine.openinfosecfoundation.org/issues/8304
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