What is the severity of CVE-2021-1244?

The severity of CVE-2021-1244 is medium, with a severity value of 6.7.

How can an attacker exploit CVE-2021-1244?

An authenticated, local attacker could execute unsigned code during the boot process on affected devices.

Which software versions are affected by CVE-2021-1244?

Cisco IOS XR NCS540L software images and Cisco IOS XR Software versions up to and including 7.2.1 are affected.

How can I fix CVE-2021-1244?

Upgrade to a fixed software release as mentioned in the Cisco Security Advisory.

Vulnerability/
CVE-2021-1244

medium

6.7

CWE

347

4/2/2021

8/11/2024

CVE-2021-1244: Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Image Verification Vulnerabilities

Q: What is CVE-2021-1244?

CVE-2021-1244 refers to multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers and Cisco IOS XR Software for the Cisco 8000 Series Routers.

First published: Thu Feb 04 2021(Updated: )

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.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XR	<7.0.12
Cisco IOS XR	>=7.1.0<7.2.1
Cisco 8201
Cisco 8202
Cisco 8808
Cisco 8812
Cisco 8818
Cisco IOS XR	<7.2.1
Cisco Ncs 540

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Reference Links

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

Frequently Asked Questions

What is CVE-2021-1244?
CVE-2021-1244 refers to multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers and Cisco IOS XR Software for the Cisco 8000 Series Routers.
What is the severity of CVE-2021-1244?
The severity of CVE-2021-1244 is medium, with a severity value of 6.7.
How can an attacker exploit CVE-2021-1244?
An authenticated, local attacker could execute unsigned code during the boot process on affected devices.
Which software versions are affected by CVE-2021-1244?
Cisco IOS XR NCS540L software images and Cisco IOS XR Software versions up to and including 7.2.1 are affected.
How can I fix CVE-2021-1244?
Upgrade to a fixed software release as mentioned in the Cisco Security Advisory.

collector/nvd-index
agent/type
agent/softwarecombine
agent/weakness
agent/references
agent/author
agent/description
collector/mitre-cve
source/MITRE
agent/severity
agent/title
agent/last-modified-date
agent/tags
agent/first-publish-date
agent/event
vendor/cisco
canonical/cisco ios xr
version/cisco ios xr/7.1.0
canonical/cisco 8201
canonical/cisco 8202
canonical/cisco 8808
canonical/cisco 8812
canonical/cisco 8818
canonical/cisco ncs 540

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