CVE-2014-3313: Cross-site scripting (XSS) vulnerability in the web user interface on Cisco Small Business SPA300 and SPA50...

Security readout for executives and security teams

Cisco Small Business SPA300 and SPA500 IP phones have a web interface XSS flaw. A remote attacker could use a crafted URL to inject script or HTML into the phone management UI. Business urgency depends on whether these older phones remain deployed and whether their web interfaces are reachable by users or administrators. Exposure is most likely in environments still operating Cisco SPA300 or SPA500 phones with reachable web management interfaces. Internet-facing or broadly reachable phone administration pages would increase risk. The bundle does not identify specific affected firmware versions. Treat as a targeted legacy-device risk rather than an emergency. Prioritize if these phones are still deployed, remotely administered, or exposed beyond trusted networks. Lack of KEV evidence lowers urgency, but unsupported phone infrastructure can create persistent operational exposure. Mitigation focus: Inventory Cisco SPA300 and SPA500 phones still in service.; Review Cisco advisory CVE-2014-3313 for affected firmware and vendor guidance.; Restrict phone web UI access to trusted administration networks..

Prepared

Jun 14, 2026, 07:14 UTC (UTC+00:00)

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