Input validation error in Cisco Systems, Inc products - CVE-2021-1587

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Main Vulnerability Database Vulnerabilities #VU56114

Input validation error in Cisco Systems, Inc products - CVE-2021-1587

Published: August 26, 2021


Vulnerability identifier: #VU56114
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1587
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of specific packets in the VXLAN Operation, Administration, and Maintenance (OAM) feature. A remote attacker can send a specially crafted packet and perform a denial of service (DoS) attack.


Affected software

Cisco Nexus 3000 Series Switches
Cisco Nexus 9000 Series Switches NX-OS Mode
Cisco NX-OS

How to mitigate CVE-2021-1587

Install updates from vendor's website.

Cisco NX-OS - update to 9.3.7a

External References

Related Security Bulletins