YosysHQ yosys BLIF File rtlil.h set heap-based overflow
Summary
| CVE | CVE-2026-3407 |
|---|---|
| State | PUBLISHED |
| Assigner | VulDB |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-02 03:16:01 UTC |
| Updated | 2026-04-29 01:00:01 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 1.9 LOW from [email protected]
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
EPSS: 0.000170000 probability, percentile 0.039890000 (date 2026-04-22)
Problem Types: CWE-119 | CWE-122 | CWE-122 Heap-based Buffer Overflow | CWE-119 Memory Corruption
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 1.9 | LOW | 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/C... |
| 4.0 | CNA | DECLARED | 4.8 | MEDIUM | 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 |
| 3.1 | [email protected] | Primary | 3.3 | LOW | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| 3.1 | CNA | DECLARED | 3.3 | LOW | 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 |
| 3.0 | CNA | DECLARED | 3.3 | LOW | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C |
| 2.0 | [email protected] | Secondary | 1.7 | AV:L/AC:L/Au:S/C:N/I:N/A:P | |
| 2.0 | CNA | DECLARED | 1.7 | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C |
CVSS v4.0 Breakdown
Attack Vector
LocalAttack Complexity
LowAttack Requirements
NonePrivileges Required
LowUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
LowSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS: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
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
LowCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | YosysHQ | Yosys | affected 0.1 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.2 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.3 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.4 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.5 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.6 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.7 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.8 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.9 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.10 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.11 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.12 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.13 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.14 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.15 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.16 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.17 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.18 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.19 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.20 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.21 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.22 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.23 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.24 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.25 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.26 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.27 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.28 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.29 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.30 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.31 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.32 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.33 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.34 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.35 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.36 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.37 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.38 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.39 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.40 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.41 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.42 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.43 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.44 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.45 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.46 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.47 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.48 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.49 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.50 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.51 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.52 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.53 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.54 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.55 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.56 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.57 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.58 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.59 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.60 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.61 | Not specified |
| CNA | YosysHQ | Yosys | affected 0.62 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| vuldb.com | [email protected] | vuldb.com | |
| github.com/YosysHQ/yosys/pull/5681 | [email protected] | github.com | |
| github.com/YosysHQ/yosys/pull/5680 | [email protected] | github.com | |
| github.com/YosysHQ/yosys/issues/5677 | [email protected] | github.com | |
| vuldb.com | [email protected] | vuldb.com | |
| github.com/YosysHQ/yosys | [email protected] | github.com | |
| github.com/oneafter/0210/blob/main/yo2/repro | [email protected] | github.com | |
| vuldb.com | [email protected] | vuldb.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Oneafter (VulDB User) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-03-01T00:00:00.000Z | Advisory disclosed |
| CNA | 2026-03-01T01:00:00.000Z | VulDB entry created |
| CNA | 2026-03-01T08:08:34.000Z | VulDB entry last update |
There are currently no legacy QID mappings associated with this CVE.