CVE-2026-48831
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
Wine ships a .desktop file that registers itself as a MIME handler for EXE files and other Windows executables. In some configurations, handling an EXE file causes it to be blindly executed with the invoker's permissions, allowing escape from Flatpak and Snap sandboxes.
Risk Assessment
A user might inadvertently run a malicious EXE file, bypassing sandbox isolation and potentially compromising the system.
Recommendation
Consider disabling Wine as the default MIME handler for EXE files or use alternative methods to run Windows applications.
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Original NVD description (English source)
Wine ships a .desktop file that registers itself as a MIME handler for EXE files and several other Windows executable file types. In some configurations, handling of an EXE file causes that file to be blindly executed with the permissions of the invoker. This allows escaping Flatpak and Snap sandboxes, because MIME handlers are not intended for use by code interpreters and loaders. NOTE: some parties feel that this is not a bug to be addressed in Wine, because there is no known solution that avoids a severe loss of usability (Wine could be a binfmt-misc handler, but binfmt-misc does not exist on all platforms supported by Wine).

