What’s Vulnerable › Vulnerabilities

CVE-2019-25656: R i386 3.5.0 Local Buffer Overflow SEH

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-05 · updated 2026-07-24
• Weakness: CWE-787

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.

Affected products

• R-Project R i386: 3.5.0

References

• https://cran.r-project.org/bin/windows/base/old/3.5.0/R-3.5.0-win.exe
• https://www.exploit-db.com/exploits/46288
• https://www.r-project.org/
• https://www.vulncheck.com/advisories/r-i386-local-buffer-overflow-seh

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