Directory Permissions Vulnerability in Cisco Desk Phone and IP Phone Series
CVE-2025-20336

5.3MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Session Initiation Protocol (sip) Software
Vendor
CVE Published:
3 September 2025

Badges

👾 Exploit Exists

What is CVE-2025-20336?

A vulnerability exists in the directory permissions of several Cisco phone models, allowing an unauthenticated remote attacker to potentially access sensitive information. This issue arises from the improper exposure of sensitive data when Web Access is enabled on affected devices. An attacker can exploit this flaw by sending a crafted packet to the device's IP address, resulting in unauthorized access to confidential information. It is crucial to note that Web Access is disabled by default, reducing the risk of exploitation.

Affected Version(s)

Cisco Session Initiation Protocol (SIP) Software 12.1(1)SR1

Cisco Session Initiation Protocol (SIP) Software 11.5(1)

Cisco Session Initiation Protocol (SIP) Software 10.3(2)

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-20336 : Directory Permissions Vulnerability in Cisco Desk Phone and IP Phone Series