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CVE-2025-20335

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CVE-2025-20335

Published: Sep 3, 2025

Modified: Sep 3, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

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 write arbitrary files on an affected device. This vulnerability is due to a lack of proper authentication controls. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to perform arbitrary file writes to specific directories in the underlying operating system. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.

VendorProductVersions

Cisco

Cisco Session Initiation Protocol (SIP) Software

affected
12.1(1)SR1
affected
11.5(1)
affected
10.3(2)
affected
10.2(2)
affected
10.3(1)

+91 more versions

Weaknesses (CWE)

CWE-284

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

References

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