How severe is CVE-2021-47706?

CVE-2021-47706 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2021-47706 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47706?

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

Does CVE-2021-47706 have an EU (EUVD) identifier?

Yes. CVE-2021-47706 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34733.

When was CVE-2021-47706 published?

CVE-2021-47706 was published on 2025-12-09 and last updated on 2026-06-17.

CVE-2021-47706

CVE-2021-47706 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-565.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-34733
Weakness: CWE-565
Published: 2025-12-09
Last modified: 2026-06-17

Description

COMMAX Biometric Access Control System 1.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to access sensitive information and circumvent physical controls in smart homes and buildings by exploiting cookie poisoning. Attackers can forge cookies to bypass authentication and disclose sensitive information.

Frequently asked questions

What is CVE-2021-47706?: COMMAX Biometric Access Control System 1.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to access sensitive information and circumvent physical controls in smart homes and buildings by exploiting cookie poisoning. Attackers can forge cookies to bypass authentication and disclose sensitive information.
How severe is CVE-2021-47706?: CVE-2021-47706 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2021-47706 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-47706?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-47706 have an EU (EUVD) identifier?: Yes. CVE-2021-47706 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34733.
When was CVE-2021-47706 published?: CVE-2021-47706 was published on 2025-12-09 and last updated on 2026-06-17.

References

Other CWE-565 vulnerabilities

CVE-2023-41084 — Critical (CVSS 10.0): Session management within the web application is incorrect and allows attackers to steal session cookies to perform a…
CVE-2014-125112 — Critical (CVSS 9.8): Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code…
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CVE-2025-14440 — Critical (CVSS 9.8): The JAY Login & Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including,…
CVE-2025-2395 — Critical (CVSS 9.8): The U-Office Force from e-Excellence has an Improper Authentication vulnerability, allowing unauthenticated remote…

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