CVE-2021-1367

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted PIM packet to an affected device. A successful exploit could allow the attacker to cause a traffic loop, resulting in a DoS condition.

• CWE-20

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4Vendor Advisory

Published

Feb 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-1361A vulnerability in the implementation of an internal file ma…9.1
• CVE-2021-1362A vulnerability in the SOAP API endpoint of Cisco Unified Co…8.8
• CVE-2021-1363Multiple vulnerabilities in the web-based management interfa…8.1
• CVE-2021-1364Multiple vulnerabilities in Cisco Unified Communications Man…4.9
• CVE-2021-1365Multiple vulnerabilities in the web-based management interfa…8.1
• CVE-2021-1366A vulnerability in the interprocess communication (IPC) chan…7.8
• CVE-2021-1368A vulnerability in the Unidirectional Link Detection (UDLD) …8.8
• CVE-2021-1369A vulnerability in the REST API of Cisco Firepower Device Ma…5.4
• CVE-2021-1370A vulnerability in a CLI command of Cisco IOS XR Software fo…7.8
• CVE-2021-1371A vulnerability in the role-based access control of Cisco IO…6.6
• CVE-2021-1372A vulnerability in Cisco Webex Meetings Desktop App and Webe…5.5
• CVE-2021-1373A vulnerability in the Control and Provisioning of Wireless …8.6