Heap-Based Buffer Overflow Vulnerability in YosysHQ Yosys
CVE-2026-3407
Key Information:
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What is CVE-2026-3407?
A vulnerability in the Yosys software from YosysHQ was discovered that affects the BLIF File Parser functionality. Specifically, there's a heap-based buffer overflow stemming from the Yosys::RTLIL::Const::set function located in kernel/rtlil.h. This flaw can be exploited locally, allowing attackers to potentially manipulate memory leading to unauthorized actions. Although the exploit has been publicly disclosed, users should apply available patches to mitigate the risk effectively. Notably, this issue is not consistently reproducible, highlighting the need for careful monitoring and immediate action upon detection.
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Affected Version(s)
yosys 0.1
yosys 0.2
yosys 0.3
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V4
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved