CVE-2026-3407 Details
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.
A heap-based buffer overflow vulnerability has been identified in YosysHQ Yosys versions through 0.62. The issue arises in the BLIF File Parser component, specifically within the Yosys::RTLIL::Const::set function in kernel/rtlil.h. This vulnerability can be exploited locally by parsing a crafted BLIF file, leading to an out-of-bounds memory access. The vulnerability has been publicly disclosed and is known to be exploitable.
Yosys maintainers have merged pull requests that address this vulnerability. The patched version can be downloaded from the Yosys GitHub repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Mar 2, 2026CISA-ADP
Assessed Mar 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/oneafter/0210/blob/main/yo2/repro | [email protected] | Exploit |
| https://github.com/YosysHQ/yosys/ | [email protected] | Source CodeVendor |
| https://github.com/YosysHQ/yosys/issues/5677 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/YosysHQ/yosys/pull/5680 | [email protected] | Source CodeVendor |
| https://github.com/YosysHQ/yosys/pull/5681 | [email protected] | Issue TrackingVendor |
| https://vuldb.com/?ctiid.348302 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/?id.348302 | [email protected] | AdvisoryExploitRemedy |
| https://vuldb.com/?submit.763755 | [email protected] | Technical Description |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| YosysHQ yosys | All versions |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 2, 2026 | New CVE Received | [email protected] |