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High · 8.4 CVE-2018-25258 EUVD-2018-21770GHSA-p8hm-rwgf-6c7f

RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass

Published Apr 12, 2026 · Updated Apr 13, 2026 · Assigned by VulnCheck

Description

RGui 3.5.0 contains a local buffer overflow vulnerability in the GUI preferences dialog that allows attackers to bypass DEP protections through structured exception handling exploitation. Attackers can craft malicious input in the Language for menus and messages field to trigger a stack-based buffer overflow, execute a ROP chain for VirtualAlloc allocation, and achieve arbitrary code execution.

Affected products

VendorProductAffectedFixed
R-Project RGui 3.5.0 —

References