CVE-2017-12260

HIGH

Cisco Small Business SPA50x/51x/52x IP Phones < 7.6.2 - DoS via SIP Request

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/101495
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039616

Scores

CVSS v3 7.5
EPSS 0.0230
EPSS Percentile 81.2%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-119
Status published
Products (9)
cisco/spa_501g_firmware < 7.6.2
cisco/spa_502g_firmware < 7.6.2
cisco/spa_504g_firmware < 7.6.2
cisco/spa_508g_firmware < 7.6.2
cisco/spa_509g_firmware < 7.6.2
cisco/spa_512g_firmware < 7.6.2
cisco/spa_514g_firmware < 7.6.2
cisco/spa_525g_firmware < 7.6.2
n/a/Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones
Published Oct 19, 2017
Tracked Since Feb 18, 2026