Is CVE-2026-3407 actively exploited?

No active exploitation of CVE-2026-3407 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3407 be exploited remotely?

No. CVE-2026-3407 requires local access to exploit.

What is the CVSS score of CVE-2026-3407?

CVE-2026-3407 has a CVSS score of 3.3 (LOW).

HOME VULNERABILITIESCVE-2026-3407

LOW

CVE-2026-3407

CWE-119Published: March 2, 2026· Updated: Mar 2, 2026

3.3

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official Description

A vulnerability was determined in YosysHQ yosys up to 0.62. This affects the function Yosys::RTLIL::Const::set of the file kernel/rtlil.h of the component BLIF File Parser. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Applying a patch is the recommended action to fix this issue. It appears that the issue is not reproducible all the time.

NVD Source

Technical Analysis

CVE-2026-3407 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.