CVE-2025-20336: Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Disclosure Vulnerability
A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability exists because the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. An attacker could exploit this vulnerability by sending a crafted packet to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information from the device. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-20336?
The severity of CVE-2025-20336 is classified as a medium vulnerability.
How do I fix CVE-2025-20336?
To fix CVE-2025-20336, update the affected Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 Series, Cisco IP Phone 8800 Series, or Cisco Video Phone 8875 to the latest firmware version provided by Cisco.
What kind of attack can exploit CVE-2025-20336?
CVE-2025-20336 can be exploited by an unauthenticated, remote attacker to access sensitive information on the affected devices.
Which devices are affected by CVE-2025-20336?
CVE-2025-20336 affects Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 Series, Cisco IP Phone 8800 Series, and Cisco Video Phone 8875.
Is CVE-2025-20336 a remote vulnerability?
Yes, CVE-2025-20336 is a remote vulnerability that allows attackers to access devices without authentication.