VULNERABILITY INTELLIGENCE

CVE-2021-1244

CVSS score6.7 MEDIUM
EPSS probability0.21%
CISA KEVNot currently listed
Published2021-02-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Description

Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Weakness classification

  • psirt@cisco.com: CWE-347

Primary references