CVE-2015-4226

Name: CVE-2015-4226
Creator: NVD / NIST
Published: 2015-06-30T15:59:17.7+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.77%

Last modified Jun 17, 2026

CVE-2015-4226 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.77% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.77%

84.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Cisco	Unified Ip Phones 9900 Series Firmware	9.3\(2\)

References

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

Timeline

Published: Jun 30, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-4226?

How severe is CVE-2015-4226?

Severity scoring for CVE-2015-4226 is pending analysis. The EPSS model estimates a 2.77% probability of exploitation in the next 30 days.

How do I fix CVE-2015-4226?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-4226?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST