CVE-2026-3407A vulnerability was determined in YosysHQ yosys up to 0.62.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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.
- CVSS
- 3.3 LOW (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-119, CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.