CVE-2021-33425

Name: CVE-2021-33425
Creator: NVD / NIST
Published: 2021-05-25T14:15:07.76+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2021-33425 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI version 19.07 which allows attackers to inject arbitrary Javascript in the OpenWRT Hostname via the Hostname Change operation.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI version 19.07 which allows attackers to inject arbitrary Javascript in the OpenWRT Hostname via the Hostname Change operation.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.56%

42.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Openwrt	Openwrt	19.07.0

References

http://openwrt.comProduct
http://www.openwall.com/lists/oss-security/2021/11/09/1Mailing List, Patch, Third Party Advisory
http://openwrt.comProduct
http://www.openwall.com/lists/oss-security/2021/11/09/1Mailing List, Patch, Third Party Advisory

Timeline

Published: May 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33425?

How severe is CVE-2021-33425?

CVE-2021-33425 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33425?

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-2021-33425?

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

Scan your code now

Source: NVD / NIST