Vulnerability record · CVE-2015-4226 · published 30 June 2015

CVE-2015-4226: Cisco unified ip phones 9900 series firmware vulnerability

Cisco · Unified Ip Phones 9900 Series Firmware

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.

7.1 CVSS 2.0 High EPSS 2.8% · top 14.2% CWE-399 · CWE-399

7.1CVSS 2.0 base score

2.8%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References

17 Jun 2026Last modified by NVD

Description

AV:N/AC:M/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Unified Ip Phones 9900 Series Firmware Cisco

References

Link	Tags
http://tools.cisco.com/security/center/viewAlert.x?alertId=39554	Vendor Advisory
http://www.securityfocus.com/bid/75471	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032748	Third Party AdvisoryVDB Entry
http://tools.cisco.com/security/center/viewAlert.x?alertId=39554	Vendor Advisory
http://www.securityfocus.com/bid/75471	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032748	Third Party AdvisoryVDB Entry

Track CVE-2015-4226 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.0CVE-2013-5533Cisco unified ip phones 9900 series firmware improper input validation vulnerabilityThe image-upgrade functionality on Cisco 9900 Unified IP phones allows local users to gain privileges by placing shell commands in an unspecified par…EPSS 0.27%11 Oct 2013 5.4CVE-2014-0658Cisco unified ip phones 9900 series firmware improper input validation vulnerabilityCisco 9900 Unified IP phones allow remote attackers to cause a denial of service (unregistration) via a crafted SIP header, aka Bug ID CSCul24898.EPSS 2.7%10 Jan 2014 5.0CVE-2015-0602Cisco unified ip phones 9900 series firmware information exposure vulnerabilityThe mobility extension on Cisco Unified IP 9900 phones with firmware 9.4(.1) and earlier allows remote attackers to obtain sensitive information by s…EPSS 1.4%7 Feb 2015 5.0CVE-2015-0600Cisco unified ip phones 9900 series firmware improper input validation vulnerabilityThe mobility extension on Cisco Unified IP 9900 phones with firmware 9.4(.1) and earlier allows remote attackers to cause a denial of service (logoff…EPSS 2.2%7 Feb 2015 5.0CVE-2013-5532Cisco unified ip phones 9900 series firmware improper input validation vulnerabilityBuffer overflow in the web-application interface on Cisco 9900 IP phones allows remote attackers to cause a denial of service (webapp interface outag…EPSS 2.1%11 Oct 2013 5.0CVE-2013-3426Cisco unified ip phones 9900 series firmware permissions and access controls vulnerabilityThe Serviceability servlet on Cisco 9900 IP phones does not properly restrict paths, which allows remote attackers to read arbitrary files by specify…EPSS 1.2%18 Jul 2013 4.6CVE-2015-0603Cisco unified ip phones 9900 series firmware permissions and access controls vulnerabilityCisco Unified IP 9900 phones with firmware 9.4(.1) and earlier use weak permissions for unspecified files, which allows local users to cause a denial…EPSS 0.30%7 Feb 2015 8.8CVE-2010-0806Microsoft Internet Explorer Peer Objects use-after-free allows remote code executionInternet Explorer 6, 6 SP1 and 7 contain a use-after-free in the Peer Objects component (iepeers.dll), where an object is accessed after deletion, le…KEVEPSS 82%analysed10 Mar 2010

Source: NIST National Vulnerability Database (record CVE-2015-4226), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.