CVE-2021-47820

Name: CVE-2021-47820
Creator: NVD / NIST
Published: 2026-01-16T19:16:06.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2021-47820 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS 4.0

5.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.19%

8.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

References

Timeline

Published: Jan 16, 2026
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2021-47820?

How severe is CVE-2021-47820?

CVE-2021-47820 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-47820?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-47820?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST