CVE-2026-3407 (GCVE-0-2026-3407)
Vulnerability from cvelistv5 – Published: 2026-03-02 03:02 – Updated: 2026-03-02 14:43
VLAI
EPSS
VEX
Title
YosysHQ yosys BLIF File rtlil.h set heap-based overflow
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-02 14:40 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.348302 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.348302 | signaturepermissions-required |
| https://vuldb.com/?submit.763755 | third-party-advisory |
| https://github.com/YosysHQ/yosys/issues/5677 | issue-tracking |
| https://github.com/YosysHQ/yosys/pull/5680 | issue-trackingpatch |
| https://github.com/oneafter/0210/blob/main/yo2/repro | exploit |
| https://github.com/YosysHQ/yosys/pull/5681 | issue-trackingpatch |
| https://github.com/YosysHQ/yosys/ | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| YosysHQ | yosys |
Affected:
0.1
Affected: 0.2 Affected: 0.3 Affected: 0.4 Affected: 0.5 Affected: 0.6 Affected: 0.7 Affected: 0.8 Affected: 0.9 Affected: 0.10 Affected: 0.11 Affected: 0.12 Affected: 0.13 Affected: 0.14 Affected: 0.15 Affected: 0.16 Affected: 0.17 Affected: 0.18 Affected: 0.19 Affected: 0.20 Affected: 0.21 Affected: 0.22 Affected: 0.23 Affected: 0.24 Affected: 0.25 Affected: 0.26 Affected: 0.27 Affected: 0.28 Affected: 0.29 Affected: 0.30 Affected: 0.31 Affected: 0.32 Affected: 0.33 Affected: 0.34 Affected: 0.35 Affected: 0.36 Affected: 0.37 Affected: 0.38 Affected: 0.39 Affected: 0.40 Affected: 0.41 Affected: 0.42 Affected: 0.43 Affected: 0.44 Affected: 0.45 Affected: 0.46 Affected: 0.47 Affected: 0.48 Affected: 0.49 Affected: 0.50 Affected: 0.51 Affected: 0.52 Affected: 0.53 Affected: 0.54 Affected: 0.55 Affected: 0.56 Affected: 0.57 Affected: 0.58 Affected: 0.59 Affected: 0.60 Affected: 0.61 Affected: 0.62 |
guessed |
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"initial_release_date": "2026-03-02T03:02:09.924000+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "yosys: YosysHQ yosys: Denial of Service via heap-based buffer overflow in BLIF File Parser",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3407.json",
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"vulnrichment": {
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\"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\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 3.3, \"baseSeverity\": \"LOW\", \"vectorString\": \"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\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 1.7, \"vectorString\": \"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C\"}}], \"affected\": [{\"vendor\": \"YosysHQ\", \"modules\": [\"BLIF File Parser\"], \"product\": \"yosys\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.1\"}, {\"status\": \"affected\", \"version\": \"0.2\"}, {\"status\": \"affected\", \"version\": \"0.3\"}, {\"status\": \"affected\", \"version\": \"0.4\"}, {\"status\": \"affected\", \"version\": \"0.5\"}, {\"status\": \"affected\", \"version\": \"0.6\"}, {\"status\": \"affected\", \"version\": \"0.7\"}, {\"status\": \"affected\", \"version\": \"0.8\"}, {\"status\": \"affected\", \"version\": \"0.9\"}, {\"status\": \"affected\", \"version\": \"0.10\"}, {\"status\": \"affected\", \"version\": \"0.11\"}, {\"status\": \"affected\", \"version\": \"0.12\"}, {\"status\": \"affected\", \"version\": \"0.13\"}, {\"status\": \"affected\", \"version\": \"0.14\"}, {\"status\": \"affected\", \"version\": \"0.15\"}, {\"status\": \"affected\", \"version\": \"0.16\"}, {\"status\": \"affected\", \"version\": \"0.17\"}, {\"status\": \"affected\", \"version\": \"0.18\"}, {\"status\": \"affected\", \"version\": \"0.19\"}, {\"status\": \"affected\", \"version\": \"0.20\"}, {\"status\": \"affected\", \"version\": \"0.21\"}, {\"status\": \"affected\", \"version\": \"0.22\"}, {\"status\": \"affected\", \"version\": \"0.23\"}, {\"status\": \"affected\", \"version\": \"0.24\"}, {\"status\": \"affected\", \"version\": \"0.25\"}, {\"status\": \"affected\", \"version\": \"0.26\"}, {\"status\": \"affected\", \"version\": \"0.27\"}, {\"status\": \"affected\", \"version\": \"0.28\"}, {\"status\": \"affected\", \"version\": \"0.29\"}, {\"status\": \"affected\", \"version\": \"0.30\"}, {\"status\": \"affected\", \"version\": \"0.31\"}, {\"status\": \"affected\", \"version\": \"0.32\"}, {\"status\": \"affected\", \"version\": \"0.33\"}, {\"status\": \"affected\", \"version\": \"0.34\"}, {\"status\": \"affected\", \"version\": \"0.35\"}, {\"status\": \"affected\", \"version\": \"0.36\"}, {\"status\": \"affected\", \"version\": \"0.37\"}, {\"status\": \"affected\", \"version\": \"0.38\"}, {\"status\": \"affected\", \"version\": \"0.39\"}, {\"status\": \"affected\", \"version\": \"0.40\"}, {\"status\": \"affected\", \"version\": \"0.41\"}, {\"status\": \"affected\", \"version\": \"0.42\"}, {\"status\": \"affected\", \"version\": \"0.43\"}, {\"status\": \"affected\", \"version\": \"0.44\"}, {\"status\": \"affected\", \"version\": \"0.45\"}, {\"status\": \"affected\", \"version\": \"0.46\"}, {\"status\": \"affected\", \"version\": \"0.47\"}, {\"status\": \"affected\", \"version\": \"0.48\"}, {\"status\": \"affected\", \"version\": \"0.49\"}, {\"status\": \"affected\", \"version\": \"0.50\"}, {\"status\": \"affected\", \"version\": \"0.51\"}, {\"status\": \"affected\", \"version\": \"0.52\"}, {\"status\": \"affected\", \"version\": \"0.53\"}, {\"status\": \"affected\", \"version\": \"0.54\"}, {\"status\": \"affected\", \"version\": \"0.55\"}, {\"status\": \"affected\", \"version\": \"0.56\"}, {\"status\": \"affected\", \"version\": \"0.57\"}, {\"status\": \"affected\", \"version\": \"0.58\"}, {\"status\": \"affected\", \"version\": \"0.59\"}, {\"status\": \"affected\", \"version\": \"0.60\"}, {\"status\": \"affected\", \"version\": \"0.61\"}, {\"status\": \"affected\", \"version\": \"0.62\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-03-01T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-03-01T01:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-03-01T08:08:34.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/?id.348302\", \"name\": \"VDB-348302 | YosysHQ yosys BLIF File rtlil.h set heap-based overflow\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/?ctiid.348302\", \"name\": \"VDB-348302 | CTI Indicators (IOB, IOC, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/?submit.763755\", \"name\": \"Submit #763755 | YosysHQ yosys 8bbde80 Heap-based Buffer Overflow\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/YosysHQ/yosys/issues/5677\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://github.com/YosysHQ/yosys/pull/5680\", \"tags\": [\"issue-tracking\", \"patch\"]}, {\"url\": \"https://github.com/oneafter/0210/blob/main/yo2/repro\", \"tags\": [\"exploit\"]}, {\"url\": \"https://github.com/YosysHQ/yosys/pull/5681\", \"tags\": [\"issue-tracking\", \"patch\"]}, {\"url\": \"https://github.com/YosysHQ/yosys/\", \"tags\": [\"product\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-122\", \"description\": \"Heap-based Buffer Overflow\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"Memory Corruption\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-03-02T03:02:09.924Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-3407\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-02T14:43:12.380Z\", \"dateReserved\": \"2026-03-01T07:03:11.753Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-03-02T03:02:09.924Z\", \"assignerShortName\": \"VulDB\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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