CVE-2026-3407
YosysHQ yosys BLIF File rtlil.h set heap-based overflow
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-122 CWE-119 |
| Vendor | yosyshq |
| Product | yosys |
| Published | Mar 2, 2026 |
| Last Updated | Mar 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
YosysHQ / yosys
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.50 0.51 0.52 0.53 0.54 0.55 0.56 0.57 0.58 0.59 0.60 0.61 0.62
References
vuldb.com: https://vuldb.com/?id.348302 vuldb.com: https://vuldb.com/?ctiid.348302 vuldb.com: https://vuldb.com/?submit.763755 github.com: https://github.com/YosysHQ/yosys/issues/5677 github.com: https://github.com/YosysHQ/yosys/pull/5680 github.com: https://github.com/oneafter/0210/blob/main/yo2/repro github.com: https://github.com/YosysHQ/yosys/pull/5681 github.com: https://github.com/YosysHQ/yosys/
Credits
🔍 Oneafter (VulDB User)