Arbitrary file upload in R-Project Rgui
CVE-2018-25258
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- R-Project Rgui — versions 3.5.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/46107 (exploit)
- www.r-project.org/ (product)
- cran.r-project.org/bin/windows/base/old/3.5.0/R-3.5.0-win.exe (product)
- www.vulncheck.com/advisories/rgui-local-buffer-overflow-seh-dep-bypass (third-party-advisory)
Frequently asked questions
- What is CVE-2018-25258?
- CVE-2018-25258 is a high-severity vulnerability in R-Project Rgui, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.4/10. Published 2026-04-12.
- How severe is CVE-2018-25258?
- High severity. CVSS v3 base score is 8.4 out of 10.