Open Information Security Foundation · Suricata · CVE-2026-22258
**Name of the Vulnerable Software and Affected Versions**
Suricata versions prior to 8.0.3
Suricata versions prior to 7.0.14
**Description**
Suricata is a network IDS, IPS and NSM engine. Crafted DCERPC traffic can cause Suricata to expand a buffer without limits, leading to memory exhaustion and process termination. While initially reported for DCERPC over UDP, it is believed that DCERPC over TCP and SMB are also affected. DCERPC/TCP in the default configuration should not be vulnerable as the default stream depth is limited to 1MiB.
**Recommendations**
For Suricata versions prior to 8.0.3, apply the patch available in version 8.0.3.
For Suricata versions prior to 7.0.14, apply the patch available in version 7.0.14.
For DCERPC/UDP, disable the parser.
For DCERPC/TCP, limit the `stream.reassembly.depth` setting.
For DCERPC/SMB, limit the `stream.reassembly.depth` setting, noting that this may lead to loss of visibility in SMB.