CVE-2021-1244 Information

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.

CVSS Vector

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

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBt

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.7