CVE-2021-1612

A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to overwrite arbitrary files on the local system. This vulnerability is due to improper access controls on files within the local file system. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on an affected device.

• CWE-61
• CWE-59

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-GjR5pGOmPatch, Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-GjR5pGOmPatch, Vendor Advisory

Published

Sep 23, 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-2021-1605Multiple vulnerabilities in the web-based management interfa…4.8
• CVE-2021-1606Multiple vulnerabilities in the web-based management interfa…4.8
• CVE-2021-1607Multiple vulnerabilities in the web-based management interfa…4.8
• CVE-2021-1609Multiple vulnerabilities in the web-based management interfa…9.8
• CVE-2021-1610Multiple vulnerabilities in the web-based management interfa…8.8
• CVE-2021-1611A vulnerability in Ethernet over GRE (EoGRE) packet processi…8.6
• CVE-2021-1614A vulnerability in the Multiprotocol Label Switching (MPLS) …5.3
• CVE-2021-1615A vulnerability in the packet processing functionality of Ci…8.6
• CVE-2021-1616A vulnerability in the H.323 application level gateway (ALG)…4.7
• CVE-2021-1617Multiple vulnerabilities in the web-based management interfa…6.5
• CVE-2021-1618Multiple vulnerabilities in the web-based management interfa…7.2
• CVE-2021-1619A vulnerability in the authentication, authorization, and ac…9.1