SB2025090419 - Multiple vulnerabilities in Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper access control (CVE-ID: CVE-2025-20335)

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.

2) Information disclosure (CVE-ID: CVE-2025-20336)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the directory permissions. A remote attacker can send a specially crafted packet to the IP address of a device and gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-write-g3kcC5Df