Is CVE-2026-3994 actively exploited?

No active exploitation of CVE-2026-3994 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3994 be exploited remotely?

No. CVE-2026-3994 requires local access to exploit.

What is the CVSS score of CVE-2026-3994?

CVE-2026-3994 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-3994

CWE-119Published: March 12, 2026· Updated: Mar 12, 2026

5.3

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.9th

Official Description

A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold::ObjectFilemold::X86_64::initialize_sections of the file src/input-files.cc of the component Object File Handler. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-3994 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.