CVE-2018-15434: Cisco Unified IP Phone 7900 Series Cross-Site Scripting Vulnerability

Security readout for executives and security teams

Cisco Unified IP Phone 7900 Series devices have a web management interface flaw that could let an attacker run script in a victim administrator's browser if the victim clicks a malicious link. This is not listed as known exploited in CISA KEV, but it can expose sensitive browser-based information tied to device management. Exposure is limited to environments using Cisco Unified IP Phone 7900 Series devices with their web-based management interface accessible to users. Risk is higher where administrators browse to the interface from general-use workstations or where management interfaces are reachable from broad internal networks. Treat this as a targeted management-interface risk, not an emergency unless exposed broadly or used by privileged administrators. Prioritize inventory, access restriction, and Cisco guidance review, especially in voice networks with legacy 7900 Series phones. Mitigation focus: Review Cisco's advisory for fixed releases, workarounds, or product-specific guidance.; Restrict access to phone web management interfaces to trusted administrative networks.; Avoid using general-purpose browsers or workstations for device management where practical..

Prepared

Jun 7, 2026, 05:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.