CVE-2026-20232 Cisco Industrial Ethernet 1000 Series Switches Stored Cross-Site Scripting Vulnerability
Authenticated attackers can inject malicious scripts into the web interface, allowing arbitrary code execution in other users' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-20232?
CVE-2026-20232 is a medium-severity cross-site scripting vulnerability in Cisco Industrial Ethernet Switches, published on 19 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A vulnerability in the web-based management interface of Cisco Industrial Ethernet (IE) 1000 Series Switches could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of another user. To exploit this vulnerability, the attacker must have valid user credentials on the affected system.
Weakness: CWE-80
Which versions are affected by CVE-2026-20232?
How do I fix CVE-2026-20232?
No fix has been published for CVE-2026-20232 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-2026-20232 being exploited?
There is no known exploitation of CVE-2026-20232 in the wild and no public exploit code.
Sources
Also known as GHSA-86m3-qpw9-pwm9.