CVE-2024-4978

Justice AV Solutions (JAVS) Viewer installer contains a malicious version of ffmpeg.exe, named fffmpeg.exe (SHA256: 421a4ad2615941b177b6ec4ab5e239c14e62af2ab07c6df1741e2a62223223c4). When run, this creates a backdoor connection to a malicious C2 server. Vendor/Product: Justice AV Solutions Viewer . Added to CISA KEV 2024-05-29; required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.