major vulnerability· requires attention

Suricata is a widely deployed network IDS/IPS; default DoH2 setting is affected. Exploitation can disrupt or compromise detection infrastructure across organizations.

Networks

CVE-2026-94083

9.4

Critical

EPSS 0.54%Patch available

Suricata DoH2 type-confusion allows crash or potential RCE via HTTP1->HTTP2 upgrade

exploited

No known exploitation not in CISA KEV as of our last sync

fix

Patch available see the advisory in the references

likelihood

EPSS 0.54%top 55% of scored CVEs

Published 20 Sept 2026Analysed here 21 Sept 2026CVSS scored by the publisher (CNA)

common questions

Is CVE-2026-94083 being exploited?

Not confirmed. CVE-2026-94083 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. EPSS currently estimates a 0.54% probability of exploitation in the next 30 days.

How severe is CVE-2026-94083?

CVE-2026-94083 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-2026-94083?

Yes. A fix has been recorded for CVE-2026-94083. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-94083 affect?

CVE-2026-94083 affects OISF Suricata < 8.0.7, Suricata 8.x with app-layer.protocols.doh2 enabled, IDS/IPS appliances embedding Suricata. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-94083?

Upgrade to Suricata 8.0.7+ or disable app-layer.protocols.doh2 until patched

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary

technical analysis

affected

OISF Suricata < 8.0.7Suricata 8.x with app-layer.protocols.doh2 enabledIDS/IPS appliances embedding Suricata

impact

Remote memory corruption via crafted DoH2 (HTTP1->HTTP2 upgrade) can crash Suricata (DoS) or enable arbitrary code execution.

action required

Immediate action required

affected versions

OISF Suricata

affected>= 8.0.0 and < 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.

cisa ssvc

exploitation: none
automatable: yes
technical impact: total

Assessed by CISA 22 Sept 2026 (SSVC 2.0.3).

timeline

20 Sept 2026Published
21 Sept 2026Analysed by vulneraibility.com · 1 day later
22 Sept 2026CISA SSVC assessment: exploitation none · 1 day later
22 Sept 2026CVE record last updated · same day later

how to fix

Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.

references

NVD CVE.org CVE Details Source

3 references in the CVE record: 3 links

Linkforum.suricata.io /t/suricata-8-0-7-released/6467
Linkgithub.com /OISF/suricata/commit/e574009add9c208f319e1d9d15b3bb1229c88074
Linkgithub.com /OISF/suricata/compare/suricata-8.0.6...suricata-8.0.7

sources

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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