How serious is CVE-2026-3407?

This vulnerability has a CVSS score of 4.8 out of 10, classified as MEDIUM severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-3407?

Yes, proof-of-concept exploit code for CVE-2026-3407 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-3407?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2026-3407?

To remediate CVE-2026-3407, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-3407

Medium

|4.8

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to potentially crash the Yosys software or execute malicious code by exploiting a flaw in how it handles certain data, specifically through a buffer overflow. The attack can only be carried out on the local machine where Yosys is running, and while it has been publicly disclosed, it doesn't always occur reliably.

Technical 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.

CVSS Vector Analysis

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeChanged

Vector String

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$638($500-$1K)

Vendor Response

Grade APatched in 0 days

Quick Information

Published

Mar 2, 2026

about 1 month ago

Last Modified

Mar 2, 2026

about 1 month ago