Cisco Zero-Day Exploited to Implant Malicious Lua Backdoor on Thousands of Devices

Cisco has warned of a new zero-day flaw in IOS XE that has been actively exploited by an unknown threat actor to deploy a malicious Lua-based implant on susceptible devices.
Tracked as CVE-2023-20273 (CVSS score: 7.2), the issue relates to a privilege escalation flaw in the web UI feature and is said to have been used alongside CVE-2023-20198 (CVSS score: 10.0) as part of an exploit chain.
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