CVE-2018-25258CWE-434

RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass

High · published April 12, 2026

CVSS v4.0
8.6
EPSS
0%
Percentile
7.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00188 · 7.9th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-04-12T12:28Z
EPSS history
Timeline
  • 12 APR 12:28Z
    RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass
    cvelistv5