What is CVE-2021-36794?

CVE-2021-36794 is a critical-severity vulnerability in Siren Investigate. CVSS score: 9.8/10. Published 2021-11-02.

How severe is CVE-2021-36794?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Siren Investigate

CVE-2021-36794

In Siren Investigate before 11.1.4, when enabling the cluster feature of the Siren Alert application, TLS verifications are disabled globally in the Siren Investigate main process.

Published 2021-11-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (70.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Siren Investigate

References

community.siren.io/c/announcements (Vendor Advisory)
docs.siren.io/index (Release Notes, Vendor Advisory)
docs.siren.io/siren-platform-user-guide/11.1/release-notes.html (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-36794?: CVE-2021-36794 is a critical-severity vulnerability in Siren Investigate. CVSS score: 9.8/10. Published 2021-11-02.
How severe is CVE-2021-36794?: Critical severity. CVSS v3 base score is 9.8 out of 10.