CVE-2019-25656 - CVE House
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Status published High CVE-2019-25656

R i386 3.5.0 Local Buffer Overflow SEH

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Dino Covotsos - Telspace Systems

References

More from R-Project

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CVE-2019-25485
R 3.4.4 Windows x64 Buffer Overflow SEH DEP ASLR Bypass
Medium 6.9
CVE-2018-25258
RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass
High 8.6

Affected Vendor

Affected Software

R i386
Vulnerable Versions:
3.5.0

Timeline

Official Publish: April 5th, 2026
Last Modified: April 6th, 2026
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-787

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1485 Data Destruction
Impact