CVE-2014-0658: Cisco Unified IP Phone 9951

Medium severity, CVSS 5.4. EPSS: 2.7% chance of exploitation in the next 30 days.

Cisco 9900 Unified IP phones allow remote attackers to cause a denial of service (unregistration) via a crafted SIP header, aka Bug ID CSCul24898.

Affected products

• Cisco Unified IP Phone 9951
• Cisco Unified IP Phone 9971
• Cisco Unified IP Phones 9900 Series Firmware: affected versions not specified

Published 2014-01-10. Last modified 2026-06-17.