CVE-2021-46442

Name: CVE-2021-46442
Creator: NVD / NIST
Published: 2022-04-27T11:15:44.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 54.57%

Last modified Jun 17, 2026

CVE-2021-46442 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In the "webupg" binary of D-Link DIR-825 G1, attackers can bypass authentication through parameters "autoupgrade.asp", and perform functions such as downloading configuration files and updating firmware without authorization.. EPSS estimates a 54.57% chance of exploitation in the next 30 days.

Description

In the "webupg" binary of D-Link DIR-825 G1, attackers can bypass authentication through parameters "autoupgrade.asp", and perform functions such as downloading configuration files and updating firmware without authorization.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

54.57%

98.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Dlink	Dir-825 Firmware	All versions

References

https://github.com/tgp-top/D-Link-DIR-825Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/tgp-top/D-Link-DIR-825Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Apr 27, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46442?

How severe is CVE-2021-46442?

CVE-2021-46442 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 54.57% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46442?

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-2021-46442?

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

Scan your code now

Source: NVD / NIST