Input validation error in Cisco Systems, Inc products - CVE-2025-20327
Published: September 25, 2025
Vulnerability identifier: #VU116111
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-20327
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the web UI. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
Cisco IOS
Cisco IE 2000 Series
Cisco IE 3010 Series
Cisco IE 4000 Series
Cisco IE 4010 Series
Cisco IE 5000 Series
Cisco IE 2000 Series
Cisco IE 3010 Series
Cisco IE 4000 Series
Cisco IE 4010 Series
Cisco IE 5000 Series
How to mitigate CVE-2025-20327
Install updates from vendor's website.