Suricata is widely deployed as core IDS/IPS; a high-severity UAF enabling RCE/DoS in traffic inspection impacts many orgs' network defenses.
CVE-2026-94084
Use-after-free in Suricata HTTP/2 processing enabling crash or possible RCE
Is CVE-2026-94084 being exploited?
Not confirmed. CVE-2026-94084 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-94084?
CVE-2026-94084 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-94084?
Yes. A fix has been recorded for CVE-2026-94084. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-94084 affect?
CVE-2026-94084 affects Suricata < 8.0.7, IDS/IPS appliances running Suricata, Network security sensors. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-94084?
Upgrade to Suricata 8.0.7+ immediately and restart sensors
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted HTTP/2 traffic can trigger a use-after-free during http.response_header rule inspection, enabling remote code execution or denial of service.
Immediate action required
- affected< 8.0.7
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.