What is CVE-2021-1288?

CVE-2021-1288 is a vulnerability in the ingress packet processing function of Cisco IOS XR Software that allows an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

How does CVE-2021-1288 affect Cisco IOS XR Software?

CVE-2021-1288 affects Cisco IOS XR Software versions 5.0.0 to 5.2.6, 5.3.0 to 5.3.4, and 6.0.0 to 6.0.2.

What is the severity of CVE-2021-1288?

CVE-2021-1288 has a severity rating of 7.5 (high).

How can an attacker exploit CVE-2021-1288?

An unauthenticated, remote attacker can exploit CVE-2021-1288 by sending specially crafted packets to the affected device, causing it to enter a DoS condition.

Is there a fix for CVE-2021-1288?

Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

Vulnerability/
CVE-2021-1288

high

8.6

CWE

399

4/2/2021

8/11/2024

CVE-2021-1288: Cisco IOS XR Software Enf Broker Denial of Service Vulnerability

First published: Thu Feb 04 2021(Updated: )

Multiple vulnerabilities in the ingress packet processing function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition 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	>=5.0.0<5.2.6
Cisco IOS XR	>=5.3.0<5.3.4
Cisco IOS XR	>=6.0.0<6.0.2

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dos-WwDdghs2

Frequently Asked Questions

What is CVE-2021-1288?
CVE-2021-1288 is a vulnerability in the ingress packet processing function of Cisco IOS XR Software that allows an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
How does CVE-2021-1288 affect Cisco IOS XR Software?
CVE-2021-1288 affects Cisco IOS XR Software versions 5.0.0 to 5.2.6, 5.3.0 to 5.3.4, and 6.0.0 to 6.0.2.
What is the severity of CVE-2021-1288?
CVE-2021-1288 has a severity rating of 7.5 (high).
How can an attacker exploit CVE-2021-1288?
An unauthenticated, remote attacker can exploit CVE-2021-1288 by sending specially crafted packets to the affected device, causing it to enter a DoS condition.
Is there a fix for CVE-2021-1288?
Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

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