CVE-2025-20158: cisco cisco session initiation protocol (sip) software
Vulnerability summary
CVE-2025-20158 is a medium (CVSS 4.4) vulnerability in cisco cisco session initiation protocol (sip) software. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.2% of scored vulnerabilities.
Timeline
- 19-02-2025PublishedVulnerability first disclosed.
- 19-02-2025Last modifiedVulnerability information updated.
Description
A vulnerability in the debug shell of Cisco Video Phone 8875 and Cisco Desk Phone 9800 Series could allow an authenticated, local attacker to access sensitive information on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials with SSH access on the affected device. SSH access is disabled by default. This vulnerability is due to insufficient validation of user-supplied input by the debug shell of an affected device. An attacker could exploit this vulnerability by sending a crafted SSH client command to the CLI. A successful exploit could allow the attacker to access sensitive information on the underlying operating system.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.16%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
0.00 pp
From 0.16% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco6 products
- cisco session initiation protocol (sip) software3.1(1) | 3.0(1) | 2.3(1) | 2.3(1)SR1 | 2.2(1) | 2.1(1) | 2.0(1) | 3.1(1)SR1 | 3.2(1)
- desk_phone_9841_firmware< 3.3\(1\)
- desk_phone_9851_firmware< 3.3\(1\)
- desk_phone_9861_firmware< 3.3\(1\)
- desk_phone_9871_firmware< 3.3\(1\)
1 vendor · 6 products
References
1 links- sec.cloudapps.cisco.com/security/…Vendor Advisory