CVE-2019-1923: Cisco SPA500DS Firmware

Medium severity, CVSS 6.6. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in Cisco Small Business SPA500 Series IP Phones could allow a physically proximate attacker to execute arbitrary commands on the device. The vulnerability is due to improper input validation in the device configuration interface. An attacker could exploit this vulnerability by accessing the configuration interface, which may require a password, and then accessing the device's physical interface and inserting a USB storage device. A successful exploit could allow the attacker to execute arbitrary commands on the device in an elevated security context. At the time of publication, this vulnerability affected Cisco Small Business SPA500 Series IP Phones firmware releases 7.6.2SR5 and prior.

Affected products

• Cisco SPA500DS Firmware: up to and including 7.6.2sr5
• Cisco SPA500S Firmware: up to and including 7.6.2sr5
• Cisco SPA501G Firmware: up to and including 7.6.2sr5
• Cisco SPA502G Firmware: up to and including 7.6.2sr5
• Cisco SPA504G Firmware: up to and including 7.6.2sr5
• Cisco SPA508G Firmware: up to and including 7.6.2sr5
• Cisco SPA509G Firmware: up to and including 7.6.2sr5
• Cisco SPA512G Firmware: up to and including 7.6.2sr5
• Cisco SPA514G Firmware: up to and including 7.6.2sr5
• Cisco SPA525G2 Firmware: up to and including 7.6.2sr5

Published 2019-07-17. Last modified 2026-06-17.