Improper access control in Cisco Systems, Inc products - CVE-2025-20335
Published: September 4, 2025
Vulnerability identifier: #VU114782
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-20335
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Desk Phone 9800 Series
Cisco IP Phone 8800 Series
Video Phone 8875
IP Phone 7800 Series
SIP IP Phone Software
Desk Phone 9800 Series
Cisco IP Phone 8800 Series
Video Phone 8875
IP Phone 7800 Series
SIP IP Phone Software
Detailed vulnerability description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to a lack of proper authentication controls in the directory permissions. A remote attacker can send a specially crafted request and write arbitrary files on the target device.
How to mitigate CVE-2025-20335
Install updates from vendor's website.