UNKNOWNKNOWN EXPLOITED

CVE-2023-20273

Cisco IOS XE Web UI Command Injection Vulnerability

Published: 2023-10-23
Modified: 2026-07-31
Sources: cisa-kev

Summary

Cisco IOS XE contains a command injection vulnerability in the web user interface. When chained with CVE-2023-20198, the attacker can leverage the new local user to elevate privilege to root and write the implant to the file system. Cisco identified CVE-2023-20273 as the vulnerability exploited to deploy the implant. CVE-2021-1435, previously associated with the exploitation events, is no longer believed to be related to this activity.

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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