CVE-2025-54309: CrushFTP Zero-Day Exploited in the Wild


On Friday, July 18, 2025, managed file transfer vendor CrushFTP released information to a private mailing list on a new critical vulnerability, tracked as CVE-2025-54309, affecting versions below 10.8.5 and 11.3.4_23 across all platforms.

According to the public-facing vendor advisory, this vulnerability in the CrushFTP managed file transfer software web interface is being exploited in the wild. Based on the Indicators of Compromise provided in the advisory, a “last_logins” value set for the internal ‘default’ user account is indicative of exploitation.

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Source: Rapid7


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