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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.

PUBLISHED Reserved 2026-04-05 | Published 2026-04-05 | Updated 2026-04-06 | Assigner VulnCheck




HIGH: 8.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
HIGH: 8.4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Out-of-bounds Write

Product status

3.5.0
affected

Credits

Dino Covotsos - Telspace Systems finder

References

www.exploit-db.com/exploits/46288 (ExploitDB-46288) exploit

www.r-project.org/ (Official Product Homepage) product

cran.r-project.org/...windows/base/old/3.5.0/R-3.5.0-win.exe (Product Reference) product

www.vulncheck.com/...sories/r-i386-local-buffer-overflow-seh (VulnCheck Advisory: R i386 3.5.0 Local Buffer Overflow SEH) third-party-advisory

cve.org (CVE-2019-25656)

nvd.nist.gov (CVE-2019-25656)

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