CVE-2019-12654

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

VendorProductVersions
CiscoCisco IOS 15.0(1)XA2>= unspecified, < n/a

References

Timeline

Published
Sep 25, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2019-12654: High severity, CVSS 7.5 | Vulnix