CVE & CISA-KEV Catalog

CVE-2025-20351

MEDIUM
6.1
CVSS v3
NVD

Description

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.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available
ip phone 7811 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 7821 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 7841 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 7861 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8811 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8821 firmwareNVD
Affected:< 11.0(1)Fixed in:11.0(1)CVE-2025-20351derived from NVD
ip phone 8832 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8841 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8845 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8851 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8861 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD
ip phone 8865 firmwareNVD
Affected:< 14.3(1)Fixed in:14.3(1)CVE-2025-20351derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged

Impact

ConfidentialityLow
IntegrityLow
AvailabilityNone

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

Exploit Intelligence

0.26%probability of exploitation in 30 days
18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-11022Medium6.999%-Fix
CVE-2019-3929Critical9.899%KEVFix
CVE-2020-9496Medium6.199%--
CVE-2023-28341Medium6.199%-Fix
CVE-2018-12998Medium6.198%--
CVE-2025-4123High7.698%-Fix
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CVE-2025-20351 severity badge

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-04.