CVE-2026-107733

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, FrameOnCommand() handles CmdExec by passing a null current-tab pointer to RunWithExe(), which dereferences WindowTab::filePath. A local process in the same interactive Windows session, at an integrity level greater than or equal to SumatraPDF's under Windows UIPI, can dispatch CmdExec over DDE or WM_COPYDATA while no document tab is open, causing abrupt process termination and loss of unsaved state. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review.

CVSS

No CVSS.

References

Link	Resource
https://github.com/sumatrapdfreader/sumatrapdf/commit/013ad659c7de13fa15624d1f8a24e3231c50516b
https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m
https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m

Configurations

No configuration.

History

14 Oct 2026, 02:16

Type	Values Removed	Values Added
References	~~() https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m -~~	() https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m -

08 Oct 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 23:16

Updated : 2026-10-14 02:16

NVD link : CVE-2026-107733

Mitre link : CVE-2026-107733

CVE.ORG link : CVE-2026-107733

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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