CVE-2026-22258: 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…

PriorityP344high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.48%

38.0th percentile

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	suricata	< suricata 1:8.0.3-1 (forky)	suricata 1:8.0.3-1 (forky)
oisf	suricata	< 7.0.14	7.0.14
oisf	suricata	—	—
oisf	suricata	>= 0 < 1:7.0.10-1+deb13u3	1:7.0.10-1+deb13u3
oisf	suricata	>= 0 < 1:8.0.3-1	1:8.0.3-1
oisf	suricata	>= 8.0.0 < 8.0.3	8.0.3

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

osv7.5HIGH

vendor_debian7.5HIGH

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