CVE-2019-25656CWE-787

R i386 3.5.0 Local Buffer Overflow SEH

High · published April 5, 2026

CVSS v4.0
8.6
EPSS
0%
Percentile
4.7
In the wild
Unconfirmed
What it is

R i386 3.5.0 contains a local buffer overflow vulnerability in the GUI Preferences dialog that allows local attackers to trigger a structured exception handler (SEH) overwrite by supplying malicious input. Attackers can craft a payload string in the 'Language for menus and messages' field to overwrite SEH records and achieve code execution with calculator or arbitrary shellcode.

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
0.00159 · 4.7th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-04-05T20:45Z
EPSS history
Timeline
  • 05 APR 20:45Z
    R i386 3.5.0 Local Buffer Overflow SEH
    cvelistv5