Unrated severityNVD Advisory· Published Feb 4, 2021· Updated Nov 8, 2024

Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Image Verification Vulnerabilities

CVE-2021-1136

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.

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Affected products

Cisco Systems, Inc./NCS 540 Series Routersllm-create
Cisco Systems, Inc./Cisco 8000 Series Routersllm-create
Cisco Systems, Inc./iOS Xr Softwarecpe-rescue
Range: n/a

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBtmitrevendor-advisoryx_refsource_CISCO

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