CVE-2026-22259: oisf suricata Uncontrolled Resource Consumption
Vulnerability summary
CVE-2026-22259 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in oisf suricata. EPSS estimates a 0.58% chance of exploitation in the next 30 days, higher than 47% 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, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).
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
0.58%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
+0.06 pp
From 0.53% on 21-09-2026
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-878h-2x6v-84q9X Refsource CONFIRMREPORTPatchVendor Advisory
- redmine.openinfosecfoundation.org/issues/8181X Refsource MISCREPORTIssue TrackingPermissions Required
