CVE-2026-48831
Description
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).
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2026-48831 NameCVE-2026-48831 DescriptionWine 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…
CVE-2026-48831
| Name | CVE-2026-48831 |
| Description | 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). |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| wine (PTS) | bullseye | 5.0.3-3 | vulnerable |
| bookworm | 8.0~repack-4 | vulnerable | |
| trixie | 10.0~repack-6 | vulnerable | |
| sid | 10.0~repack-12 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| wine | source | (unstable) | (unfixed) |
Notes
[trixie] - wine <no-dsa> (Minor issue)
[bookworm] - wine <no-dsa> (Minor issue)
https://bugs.winehq.org/show_bug.cgi?id=59767
https://www.openwall.com/lists/oss-security/2026/05/19/1
https://www.openwall.com/lists/oss-security/2026/05/25/1
Apply commands
[trixie] - wine <no-dsa> (Minor issue)[bookworm] - wine <no-dsa> (Minor issue)https://bugs.winehq.org/show_bug.cgi?id=59767https://www.openwall.com/lists/oss-security/2026/05/19/1https://www.openwall.com/lists/oss-security/2026/05/25/1OS impact
Debian Affected 4 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Affected | — |
| bullseye | Affected | — |
| bookworm | Affected | — |
References
CWEs
CWE-669
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.