CVE-2018-25258

RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass

CVSS 8.6 HIGHEPSS 0.2%CWE-434

Vexday Risk Score

41Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

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

Lifecycle

12 Apr 2026Published on NVD

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

RGui 3.5.0 contains a local buffer overflow vulnerability in the GUI preferences dialog that allows attackers to bypass DEP protections through structured exception handling exploitation. Attackers can craft malicious input in the Language for menus and messages field to trigger a stack-based buffer overflow, execute a ROP chain for VirtualAlloc allocation, and achieve arbitrary code execution.

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 · RGui

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/46107unverified

⚠ 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/46107 https://www.r-project.org/https://www.vulncheck.com/advisories/rgui-local-buffer-overflow-seh-dep-bypass