CVE-2021-43661 Cross-site scripting in n/a

Medium 6.1 Published 30 Mar 2022 Updated 4 Aug 2024

A reflected cross-site scripting vulnerability in the TOTOLink EX300_v2 router allows attackers to inject malicious scripts via the home.asp component.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-43661?

CVE-2021-43661 is a medium-severity cross-site scripting vulnerability in n/a, published on 30 Mar 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the component /home.asp.

Weakness: CWE-79

Which versions are affected by CVE-2021-43661?

It affects 1 product.

Products include Totolink Ex300 V2 Firmware.

How do I fix CVE-2021-43661?

No fix has been published for CVE-2021-43661 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-43661 being exploited?

There is no known exploitation of CVE-2021-43661 in the wild and no public exploit code.

Sources

Also known as GHSA-hg29-53rh-m9vp.