How severe is CVE-2021-36794?

CVE-2021-36794 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-36794 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36794?

CVE-2021-36794 affects Siren Investigate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36794?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-36794 published?

CVE-2021-36794 was published on 2021-11-02 and last updated on 2026-06-17.

CVE-2021-36794

CVE-2021-36794 is a critical-severity vulnerability in Siren Investigate with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Siren Investigate
Published: 2021-11-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-36794?: CVE-2021-36794 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-36794 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36794?: CVE-2021-36794 affects Siren Investigate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36794?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-36794 published?: CVE-2021-36794 was published on 2021-11-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:siren:investigate:*:*:*:*:*:*:*:*

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