CVE-2021-1244
MEDIUMCisco IOS XR < 7.0.12 - Authenticated Unsigned Code Execution during Boot Process
Title source: llmDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBt
Scores
CVSS v3
6.7
EPSS
0.0002
EPSS Percentile
6.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-347
Status
published
Products (1)
cisco/ios_xr
< 7.0.12
Published
Feb 04, 2021
Tracked Since
Feb 18, 2026