Actively exploited in the wild
ExifTool Remote Code Execution Vulnerability
Perl - Exiftool · Listed in the CISA KEV since 2021-11-17. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2021-22204
MediumCVSS 6.8KEVSummary
Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing a malicious image.
Risk Assessment
An attacker can supply a malicious DjVu file to execute arbitrary code in the context of the image processing process, potentially leading to system compromise.
Recommendation
Update ExifTool to a version newer than 7.44 that includes the fix for user data neutralization in the DjVu format, or avoid processing untrusted DjVu files.
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Original NVD description (English source)
Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the malicious image