CVE-2021-47820

CVE-2021-47820 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. 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-352.

Key facts

Description

Ubee EVW327 contains a cross-site request forgery vulnerability that allows attackers to enable remote access without user interaction. Attackers can craft a malicious webpage that automatically submits a form to change router remote access settings to port 8080 without the user's consent.

Frequently asked questions

What is CVE-2021-47820?
Ubee EVW327 contains a cross-site request forgery vulnerability that allows attackers to enable remote access without user interaction. Attackers can craft a malicious webpage that automatically submits a form to change router remote access settings to port 8080 without the user's consent.
How severe is CVE-2021-47820?
CVE-2021-47820 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-47820 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-47820?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-47820 have an EU (EUVD) identifier?
Yes. CVE-2021-47820 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2907.
When was CVE-2021-47820 published?
CVE-2021-47820 was published on 2026-01-16 and last updated on 2026-06-17.

References

Other CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities

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