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Vulnerability IntelligenceCVE-2019-25656

CVE-2019-25656

HIGH8.6

R i386 3.5.0 Local Buffer Overflow SEH

Published Apr 5, 2026

Modified 1 weeks ago

Details

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.

References

https://cran.r-project.org/bin/windows/base/old/3.5.0/R-3.5.0-win.exe

https://www.cve.org/CVERecord?id=CVE-2019-25656

https://www.exploit-db.com/exploits/46288

https://www.r-project.org/

https://www.vulncheck.com/advisories/r-i386-local-buffer-overflow-seh

CVSS Analysis

CVSS v4.0

8.6

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

HighVC:H

Vuln. Integrity

HighVI:H

Vuln. Availability

HighVA:H

Subsequent System

Subseq. Confidentiality

NoneSC:N

Subseq. Integrity

NoneSI:N

Subseq. Availability

NoneSA:N

8.6/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

Weakness Type (CWE)

Memory Safety

Out-of-bounds Write

Ecosystems

Timeline

PublishedApr 5, 2026

ModifiedApr 6, 2026

CVE-2019-25656 | Mondoo Vulnerability Intelligence