VULNERABILITY INTELLIGENCE

CVE-2019-12654

CVSS score7.5 HIGH
EPSS probability1.98%
CISA KEVNot currently listed
Published2019-09-25
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A vulnerability in the common Session Initiation Protocol (SIP) library of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient sanity checks on an internal data structure. An attacker could exploit this vulnerability by sending a sequence of malicious SIP messages to an affected device. An exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the iosd process. This triggers a reload of the device.

Weakness classification

  • psirt@cisco.com: CWE-476
  • nvd@nist.gov: CWE-476

Primary references