CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2024-4978: Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability

criticalknown exploitedCVE-2024-4978
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Justice AV Solutionsproduct: JAVS ViewerSupply chain
What
The JAVS Viewer installer contains a malicious version of ffmpeg.exe that creates a backdoor connection to a malicious C2 server.
Who is affected
Users of the JAVS Viewer installer are affected by this vulnerability.
Urgency
Immediate action is required as the vulnerability is actively exploited and classified as critical.
Action
Remove the affected installer and replace it with a clean version.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch JAVS Viewer

Get an email when a new JAVS Viewer advisory drops — max one per day, one-click unsubscribe.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-05-29
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-4978

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2024-4978coverage & exploitation statusNVD · CVE.org

More from CISA Known Exploited Vulnerabilities