← CVE Intelligence

CVE-2026-107734

SumatraPDF: SyncTeX Argument Injection in Inverse Search Enables Arbitrary Command Execution via External Editors PUBLISHED

Description (CNA)

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, an attacker-controlled SyncTeX source filename is substituted for the %f placeholder in an external editor command line without safe Windows argument quoting, and the resulting command line is passed to CreateProcessW(). A user with an external editor configured or auto-detected who opens a PDF with a crafted .synctex.gz file and invokes inverse search can inject command-line flags; the resulting impact depends on the target editor interpreting those flags and can include unintended editor actions or code execution through a malicious extension. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review.

Affected (CNA)

Vendor / productVersions
sumatrapdfreader / sumatrapdfaffected <= 3.5.2

CWE

CWE-20, CWE-88

References

ADP enrichment

CISA-ADP

No English description supplied.