What’s Vulnerable › Vulnerabilities

CVE-2015-4226

• Severity: high (CVSS 7.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-06-30 · updated 2026-06-17
• Weakness: CWE-399

Description

The packet-storing feature on Cisco 9900 phones with firmware 9.3(2) does not properly support the RTP protocol, which allows remote attackers to cause a denial of service (device hang) by sending malformed RTP packets after a call is answered, aka Bug ID CSCur39976.

Affected products

• Cisco Unified Ip Phones 9900 Series Firmware: 9.3(2)

References

• http://tools.cisco.com/security/center/viewAlert.x?alertId=39554
• http://www.securityfocus.com/bid/75471
• http://www.securitytracker.com/id/1032748
• http://tools.cisco.com/security/center/viewAlert.x?alertId=39554
• http://www.securityfocus.com/bid/75471
• http://www.securitytracker.com/id/1032748

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