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Vulnerability record · CVE-2026-48831 · published 24 May 2026

CVE-2026-48831: Wine ships a .desktop file that registers itself as a MIME handler for EXE files and several other Windows exe…

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).

7.3 CVSS 4.0 High EPSS 0.18% · top 93.2% CWE-669 · CWE-669 Deferred
7.3CVSS 4.0 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
23 Jul 2026Last modified by NVD

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).

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:

References

LinkTags
https://bugs.winehq.org/show_bug.cgi?id=59767
https://www.openwall.com/lists/oss-security/2026/05/19/1
http://www.openwall.com/lists/oss-security/2026/05/25/1

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2026-31431Linux kernel algif_aead in-place crypto operation flawThe Linux kernel's algif_aead AF_ALG AEAD interface operated in-place on buffers that come from different mappings, a flaw the fix resolves by revert…KEVEPSS 3.4%analysed7.2CVE-2021-22900Pulse Connect Secure admin file upload leads to code injectionPulse Connect Secure before 9.1R11.4 allows an authenticated administrator to upload a maliciously crafted archive through the administrator web inte…KEVEPSS 14%analysed

Source: NIST National Vulnerability Database (record CVE-2026-48831), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.