CVE-2019-25656

R i386 3.5.0 Local Buffer Overflow SEH

CVSS 8.6 HIGHEPSS 0.2%CWE-787

Vexday Risk Score

41Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 8.6EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

05 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

R-Project · R i386

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/46288unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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