High 8.4Published Apr 5, 2026

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

Updated under an hour ago (Oct 25, 2026, 9:10 PM ET)

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It affects R-Project R i386. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for R-Project R i386

Exploited in the last 30 days

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.

CVSS: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Apr 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

R-Project R i386 r_project:r_i386 (from the name)	3.5.0	CNA record

References

https://www.exploit-db.com/exploits/46288exploit
https://www.r-project.org/product
https://cran.r-project.org/bin/windows/base/old/3.5.0/R-3.5.0-win.exeproduct
https://www.vulncheck.com/advisories/r-i386-local-buffer-overflow-sehthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.