CVE-2025-20336
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-03

Last updated on: 2025-09-04

Assigner: Cisco Systems, Inc.

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 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.
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Meta Information
Published
2025-09-03
Last Modified
2025-09-04
Generated
2026-06-16
AI Q&A
2025-09-03
EPSS Evaluated
2026-06-15
NVD
CVE-2025-20336
EUVD
EUVD-2025-26613
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
cisco ip_phone_8800_series *
cisco video_phone_8875 *
cisco desk_phone_9800_series *
cisco ip_phone_7800_series *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
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Executive Summary

This vulnerability is due to improper directory permissions in certain Cisco phone models, which allows an unauthenticated remote attacker to access sensitive information on the device by sending a specially crafted packet to the device's IP address if Web Access is enabled.

Impact Analysis

An attacker exploiting this vulnerability could gain access to sensitive information stored on the affected Cisco phone device without needing authentication, potentially leading to information disclosure.

Mitigation Strategies

To mitigate this vulnerability, ensure that Web Access is disabled on Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 devices, as Web Access is disabled by default and must be enabled for exploitation. Disabling Web Access will prevent unauthenticated remote attackers from accessing sensitive information.

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