CVE-2026-3407
Severity CVSS v4.0:
MEDIUM
Type:
CWE-119
Buffer Errors
Publication date:
02/03/2026
Last modified:
02/03/2026
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.
Impact
Base Score 4.0
4.80
Severity 4.0
MEDIUM
Base Score 3.x
3.30
Severity 3.x
LOW
Base Score 2.0
1.70
Severity 2.0
LOW
References to Advisories, Solutions, and Tools
- https://github.com/YosysHQ/yosys/
- https://github.com/YosysHQ/yosys/issues/5677
- https://github.com/YosysHQ/yosys/pull/5680
- https://github.com/YosysHQ/yosys/pull/5681
- https://github.com/oneafter/0210/blob/main/yo2/repro
- https://vuldb.com/?ctiid_348302=
- https://vuldb.com/?id_348302=
- https://vuldb.com/?submit_763755=