CVE-2019-16026

A vulnerability in the implementation of the Stream Control Transmission Protocol (SCTP) on Cisco Mobility Management Entity (MME) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an eNodeB that is connected to an affected device. The vulnerability is due to insufficient input validation of SCTP traffic. An attacker could exploit this vulnerability by leveraging a man-in-the-middle position between the eNodeB and the MME and then sending a crafted SCTP message to the MME. A successful exploit would cause the MME to stop sending SCTP messages to the eNodeB, triggering a DoS condition.

• CWE-20
• CWE-20

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200108-mme-dosVendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200108-mme-dosVendor Advisory

Published

Jan 26, 2020

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-2019-16020Multiple vulnerabilities in the implementation of Border Gat…8.6
• CVE-2019-16021Multiple vulnerabilities in the implementation of Border Gat…7.5
• CVE-2019-16022Multiple vulnerabilities in the implementation of Border Gat…8.6
• CVE-2019-16023Multiple vulnerabilities in the implementation of Border Gat…7.5
• CVE-2019-16024A vulnerability in the web-based management interface of Cis…6.1
• CVE-2019-16025A vulnerability in the web framework of Cisco Emergency Resp…4.8
• CVE-2019-16027A vulnerability in the implementation of the Intermediate Sy…6.5
• CVE-2019-16028A vulnerability in the web-based management interface of Cis…9.8
• CVE-2019-16029A vulnerability in the application programming interface (AP…9.1
• CVE-2019-1603A vulnerability in the CLI of Cisco NX-OS Software could all…7.8
• CVE-2019-1604A vulnerability in the user account management interface of …7.8
• CVE-2019-1605A vulnerability in the NX-API feature of Cisco NX-OS Softwar…7.8