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CVE-2018-25258

8.4 · HIGH

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.

Published Apr 12, 2026CWE-434EPSS 0.19%

Overview

CVE-2018-25258 is a high-severity vulnerability. It was published on April 12, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcran.r-project.org/bin/windows/base/old/3.5.0/R-3.5.0-win.exeRefwww.exploit-db.com/exploits/46107Refwww.r-project.org/Refwww.vulncheck.com/advisories/rgui-local-buffer-overflow-seh-dep-bypass

How CyberStrike helps

Frequently asked questions

What is CVE-2018-25258?

CVE-2018-25258 is a high-severity vulnerability. It was published on April 12, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2018-25258?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-25258?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-25258?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-25258 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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