CVE-2017-12260

Name: CVE-2017-12260
Creator: NVD / NIST
Published: 2017-10-19T08:29:00.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.30%

Last modified Jun 17, 2026

CVE-2017-12260 is a vulnerability of currently unknown severity. A vulnerability in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to become unresponsive, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of SIP request messages by an affected device. EPSS estimates a 2.30% chance of exploitation in the next 30 days.

Description

A vulnerability in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to become unresponsive, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of SIP request messages by an affected device. An attacker could exploit this vulnerability by using formatted specifiers in a SIP payload that is sent to an affected device. A successful exploit could allow the attacker to cause the affected device to become unresponsive, resulting in a DoS condition that persists until the device is restarted manually. This vulnerability affects Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones that are running firmware release 7.6.2SR1 or earlier. Cisco Bug IDs: CSCvc63986.

Metrics

EPSS Probability

2.30%

81.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Cisco	Spa 501g Firmware	<= 7.6.2	Sr1
Cisco	Spa 502g Firmware	<= 7.6.2	Sr1
Cisco	Spa 504g Firmware	<= 7.6.2	Sr1
Cisco	Spa 508g Firmware	<= 7.6.2	Sr1
Cisco	Spa 509g Firmware	<= 7.6.2	Sr1
Cisco	Spa 512g Firmware	<= 7.6.2	Sr1
Cisco	Spa 514g Firmware	<= 7.6.2	Sr1
Cisco	Spa 525g Firmware	<= 7.6.2	Sr1

References

http://www.securityfocus.com/bid/101495Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039616Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171018-sip1Vendor Advisory
http://www.securityfocus.com/bid/101495Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039616Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171018-sip1Vendor Advisory

Timeline

Published: Oct 19, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-12260?

How severe is CVE-2017-12260?

Severity scoring for CVE-2017-12260 is pending analysis. The EPSS model estimates a 2.30% probability of exploitation in the next 30 days.

How do I fix CVE-2017-12260?

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-2017-12260?

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

Scan your code now

Source: NVD / NIST