CVE-2025-20180 Cisco Secure Email and Web Manager and Secure Email Gateway Cross-Site Scripting Vulnerability
Authenticated attackers can execute arbitrary scripts or access sensitive data via stored XSS in Cisco Secure Email interfaces.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-20180?
CVE-2025-20180 is a medium-severity cross-site scripting vulnerability in Cisco Asyncos, published on 5 Feb 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager and Secure Email Gateway 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 input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of Operator.
Weakness: CWE-79
Which versions are affected by CVE-2025-20180?
It affects 1 product.
Products include Cisco Asyncos.
How do I fix CVE-2025-20180?
No fix has been published for CVE-2025-20180 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-2025-20180 being exploited?
There is no known exploitation of CVE-2025-20180 in the wild and no public exploit code.
Other vulnerabilities in Cisco Asyncos
- CVE-2025-20393 Cisco Multiple Products Improper Input Validation
- CVE-2026-76519 Cisco Secure Email Gateway Relative Path Traversal
- CVE-2026-76461 Cisco Secure Email Gateway SQL Injection
- CVE-2024-20435 Command injection in Cisco Secure Web Appliance
- CVE-2019-15956 Cisco Web Security Appliance Unauthorized Device Reset Vulnerability
Sources
Also known as GHSA-xcj6-9mrr-2jw3.