CVE-2026-22262: oisf suricata Stack-based Buffer Overflow
Vulnerability summary
CVE-2026-22262 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in oisf suricata. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45% 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. While saving a dataset a stack buffer is used to prepare the data. Prior to versions 8.0.3 and 7.0.14, if the data in the dataset is too large, this can result in a stack overflow. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not use rules with datasets `save` nor `state` options.
CVSS metrics
4 scores · 4 sources · 1 version- CVE.orgCNA5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
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
11 links- github.com/OISF/suricata/security/advisories/GHSA-9qg5-2gwh-xp86X Refsource CONFIRMREPORTVendor Advisory
