CVE-2025-20351

mediumpriority · track · 0EPSS 0.003 · 21 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.29% (21st) EPSS
CVSS 6.1 · medium
Is it mine?
146 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cert_bund · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to conduct XSS attacks against a user of the web UI. This vulnerability exists because the web UI of an affected device does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. Note: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

6.1
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU
v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 2.7
v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US
05

affected products (146)

Products and version ranges known to be affected.

showing 20 of 146
06

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2025-2323Cisco IP Phone: Mehrere SchwachstellenDeutsch2025-10-15csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Cisco IP Phone ausnutzen, um einen Denial of Service Angriff durchzuführen, und um einen Cross-Site Scripting Angriff durchzuführen.

  • cisco-sa-phone-dos-FPyjLV7ACisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities2025-10-15csaf · cisco_csafUS

    Multiple vulnerabilities in Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco Session Initiation Protocol (SIP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or conduct a cross-site scripting (XSS) attack against a user of the web UI. Note: To exploit these vulnerabilities, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

07

also known as (3)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundcisco_csafNVDCVE.orgMITRE
published 2025-10-15modified 2026-06-17
09

references (5)

External citations — patches, advisories, analysis.

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