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China-linked Bronze Butler Exploits Motex Lanscope Zero-Day Vulnerability

China-linked Bronze Butler Exploits Motex Lanscope Zero-Day Vulnerability

First seen 2 Dec 2025, 18:33 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

China-linked cyber-espionage group Bronze Butler, also known as Tick, exploited a zero-day vulnerability in Motex Lanscope Endpoint Manager, identified as CVE-2025-61932. This critical request origin verification flaw was used to deploy an updated version of their Gokcpdoor malware to steal confidential information. The exploitation was observed by Sophos researchers in mid-2025 before a patch was released.

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