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CVE-2026-22258

Suricata DCERPC: unbounded fragment buffering leads to memory exhaustion

Published: Jan 27, 2026Updated: Jan 30, 2026 Sources: CVE List NVD BDUCWE-400
7.5HIGH
NVD MITRE
EPSS Score
0.5%
Top 62.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400CWE-770

Affected Products

suricataoisf
On-premNetwork Device
Networking Infrastructure / firewall
suricataOISF
On-premNetwork Device
Networking Infrastructure / firewall
РОСА ХРОМАО «НТЦ ИТ РОСА»
On-prem
Operating Systems / linux-distro
SuricataOpen Information Security Foundation
On-prem
Security Products / vuln-mgmt-scanner
Межсетевой экран "Ideco UTM"ООО "Айдеко Софтвер"
On-prem
Networking Infrastructure / firewall
oisfoss-projectNetworking Infrastructureaka suricata, libhtp, suricata-update
ао «нтц ит роса»commercialRUOperating Systems
open information security foundationoss-projectSecurity Productsaka ofis, suricata, libhtp
ооо "айдеко софтвер"commercialRUNetworking Infrastructureaka aidco software, айде́ко софтвер

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/OISF/suricata/commit/39d8c302af3422a096b75474a4f295a754ec6a74
github.com
https://github.com/OISF/suricata/commit/f82a388d0283725cb76782cf64e8341cab370830
github.com
https://github.com/OISF/suricata/security/advisories/GHSA-289c-h599-3xcx
github.com
and 2 more references View all →

Timeline

Published
Jan 27, 2026
Last Updated
Jan 30, 2026

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