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CVE-2025-20158

15
FAUCET Score

CVE-2025-20158 describes a sensitive information disclosure vulnerability in the debug shell of Cisco Video Phone 8875 and Cisco Desk Phone 9800 Series. An authenticated, local attacker with administrative SSH credentials can exploit insufficient input validation to access underlying operating system information. This vulnerability has a CVSS score of 4.4 (MEDIUM) due to its local attack vector and high impact on confidentiality, though SSH access is disabled by default, increasing complexity. There is currently no public exploit code, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.3\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:video_phone_8875_firmware:*:*:*:*:*:*:*:*
< 3.3\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:desk_phone_9871_firmware:*:*:*:*:*:*:*:*
< 3.3\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:desk_phone_9841_firmware:*:*:*:*:*:*:*:*
< 3.3\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:desk_phone_9851_firmware:*:*:*:*:*:*:*:*
< 3.3\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:desk_phone_9861_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 36th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-info-disc-YyxsWStK
Vendor Advisory