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TI-2018-15483 Aliases CVE-2018-25258GHSA-p8hm-rwgf-6c7f

RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass

Priority HIGH 72CWE-434Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00188 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
R-ProjectRGui3.5.0—No fix listedCNA
  • RGui VendorR-Project Affected 3.5.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-25258
  2. 2026-10-03 Alias added: GHSA-p8hm-rwgf-6c7f

References

Exploit 1

Other 2

  • TI-2024-18160 Deserialization of untrusted data in R-Project R CVSS 3.1HIGH 8.8
  • TI-2019-15747 R 3.4.4 Local Buffer Overflow Windows XP SP3 CVSS 4.0HIGH 8.6
  • TI-2019-15709 R i386 3.5.0 Local Buffer Overflow SEH CVSS 4.0HIGH 8.6
  • TI-2019-15538 R 3.4.4 Windows x64 Buffer Overflow SEH DEP ASLR Bypass CVSS 4.0MEDIUM 6.9
  • TI-2020-16754 The R programming language’s default package manager CRAN is affected by a path traversal… CVSS 3.1CRITICAL 9.8
  • TI-2016-07171 Buffer overflow in R-Project R CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences