What is CVE-2025-20336?

CVE-2025-20336 is a medium-severity vulnerability in Cisco Session Initiation Protocol (Sip) Software, classified under Information Disclosure. CVSS score: 5.3/10. Published 2025-09-03.

How severe is CVE-2025-20336?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2025-20336 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Cisco Session Initiation Protocol (Sip) Software

CVE-2025-20336

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 de…

Vulnerability class: Information Disclosure

EPSS: 0.000 (10.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cisco Session Initiation Protocol (Sip) Software — versions 12.1(1)SR1, 11.5(1), 10.3(2)

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cisco-sa-phone-write-g3kcC5Df

Frequently asked questions

What is CVE-2025-20336?: CVE-2025-20336 is a medium-severity vulnerability in Cisco Session Initiation Protocol (Sip) Software, classified under Information Disclosure. CVSS score: 5.3/10. Published 2025-09-03.
How severe is CVE-2025-20336?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2025-20336 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.