Is there a public PoC exploit available for EUVD-2018-21811?

Yes, a public proof-of-concept exploit is available for EUVD-2018-21811. Prioritise patching immediately. EPSS: 0.0%.

Project64 EUVD-2018-21811

Q: What is the CVSS score of EUVD-2018-21811?

EUVD-2018-21811 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

| CVE-2018-25291 MEDIUM

Classic Buffer Overflow (CWE-120)

2026-04-26 VulnCheck

Buffer Overflow Project64

6.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.9 MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

PoC Detected

Apr 27, 2026 - 18:55 vuln.today

Public exploit code

CVSS changed

Apr 26, 2026 - 22:22 NVD

6.2 (MEDIUM) 6.9 (MEDIUM)

EUVD ID Assigned

Apr 26, 2026 - 13:30 euvd

EUVD-2018-21811

CVE Published

Apr 26, 2026 - 13:19 nvd

MEDIUM 6.9

DescriptionCVE.org

Project64 2.3.2 contains a buffer overflow vulnerability in the Plugin Directory settings field that allows local attackers to crash the application by supplying an excessively long string. Attackers can input a 6000-byte payload into the Plugin Directory field through the Options > Settings > Directories interface to trigger an application crash when settings are reopened.

AnalysisAI

Project64 2.3.2 contains a buffer overflow vulnerability in the Plugin Directory settings field that allows local attackers to crash the application by supplying an excessively long string. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. Project64 2.3.2 contains a buffer overflow vulnerability in the Plugin Directory settings field that allows local attackers to crash the application by supplying an excessively long string. Attackers can input a 6000-byte payload into the Plugin Directory field through the Options > Settings > Directories interface to trigger an application crash when settings are reopened. Affected products include: Pj64-Emu Project64.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.