CVE-2026-22258: oisf suricata Uncontrolled Resource Consumption
Vulnerability summary
CVE-2026-22258 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in oisf suricata. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 27-01-2026PublishedVulnerability first disclosed.
- 27-01-2026Last modifiedVulnerability information updated.
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 metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
+0.05 pp
From 0.50% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Affected systems
Debian1 product
- suricata< 1:7.0.10-1+deb13u3 | < 1:8.0.3-1
Oisf1 product
- suricata< 7.0.14 | ≥ 8.0.0, < 8.0.3
Ubuntu1 product
- suricataAll versions (No fix recorded)
3 vendors · 3 products
References
7 links- github.com/OISF/suricata/security/advisories/GHSA-289c-h599-3xcxX Refsource CONFIRMREPORTPatchVendor Advisory
- redmine.openinfosecfoundation.org/issues/8182X Refsource MISCREPORTIssue TrackingPermissions Required
