CVE-2026-20589 (GCVE-0-2026-20589)
Vulnerability from cvelistv5 – Published: 2026-10-05 01:39 – Updated: 2026-10-05 01:39
VLAI
EPSS
VEX
Summary
In venc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9606.
Severity
No CVSS data available.
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT2718
Affected: MT6768 Affected: MT6769 Affected: MT6789 Affected: MT6833 Affected: MT6855 Affected: MT6877 Affected: MT8186 Affected: MT8188 Affected: MT8189 Affected: MT8195 Affected: MT8196 Affected: MT8367 Affected: MT8391 Affected: MT8395 Affected: MT8668 Affected: MT8676 Affected: MT8678 Affected: MT8696 Affected: MT8781 Affected: MT8788E Affected: MT8792 Affected: MT8793 Affected: MT8799 Affected: MT8910 |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "MediaTek chipset",
"vendor": "MediaTek, Inc.",
"versions": [
{
"status": "affected",
"version": "MT2718"
},
{
"status": "affected",
"version": "MT6768"
},
{
"status": "affected",
"version": "MT6769"
},
{
"status": "affected",
"version": "MT6789"
},
{
"status": "affected",
"version": "MT6833"
},
{
"status": "affected",
"version": "MT6855"
},
{
"status": "affected",
"version": "MT6877"
},
{
"status": "affected",
"version": "MT8186"
},
{
"status": "affected",
"version": "MT8188"
},
{
"status": "affected",
"version": "MT8189"
},
{
"status": "affected",
"version": "MT8195"
},
{
"status": "affected",
"version": "MT8196"
},
{
"status": "affected",
"version": "MT8367"
},
{
"status": "affected",
"version": "MT8391"
},
{
"status": "affected",
"version": "MT8395"
},
{
"status": "affected",
"version": "MT8668"
},
{
"status": "affected",
"version": "MT8676"
},
{
"status": "affected",
"version": "MT8678"
},
{
"status": "affected",
"version": "MT8696"
},
{
"status": "affected",
"version": "MT8781"
},
{
"status": "affected",
"version": "MT8788E"
},
{
"status": "affected",
"version": "MT8792"
},
{
"status": "affected",
"version": "MT8793"
},
{
"status": "affected",
"version": "MT8799"
},
{
"status": "affected",
"version": "MT8910"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In venc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9606."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787 Out-of-bounds Write",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-05T01:39:47.380Z",
"orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
"shortName": "MediaTek"
},
"references": [
{
"url": "https://www.mediatek.com/product-security-bulletin/October-2026"
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
"assignerShortName": "MediaTek",
"cveId": "CVE-2026-20589",
"datePublished": "2026-10-05T01:39:47.380Z",
"dateReserved": "2025-11-03T01:30:59.049Z",
"dateUpdated": "2026-10-05T01:39:47.380Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "MediaTek chipset",
"vendor": "MediaTek, Inc.",
"versions": [
{
"status": "affected",
"version": "MT2718"
},
{
"status": "affected",
"version": "MT6768"
},
{
"status": "affected",
"version": "MT6769"
},
{
"status": "affected",
"version": "MT6789"
},
{
"status": "affected",
"version": "MT6833"
},
{
"status": "affected",
"version": "MT6855"
},
{
"status": "affected",
"version": "MT6877"
},
{
"status": "affected",
"version": "MT8186"
},
{
"status": "affected",
"version": "MT8188"
},
{
"status": "affected",
"version": "MT8189"
},
{
"status": "affected",
"version": "MT8195"
},
{
"status": "affected",
"version": "MT8196"
},
{
"status": "affected",
"version": "MT8367"
},
{
"status": "affected",
"version": "MT8391"
},
{
"status": "affected",
"version": "MT8395"
},
{
"status": "affected",
"version": "MT8668"
},
{
"status": "affected",
"version": "MT8676"
},
{
"status": "affected",
"version": "MT8678"
},
{
"status": "affected",
"version": "MT8696"
},
{
"status": "affected",
"version": "MT8781"
},
{
"status": "affected",
"version": "MT8788E"
},
{
"status": "affected",
"version": "MT8792"
},
{
"status": "affected",
"version": "MT8793"
},
{
"status": "affected",
"version": "MT8799"
},
{
"status": "affected",
"version": "MT8910"
}
]
}
],
"source": "security@mediatek.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In venc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9606."
}
],
"id": "CVE-2026-20589",
"lastModified": "2026-10-05T02:16:54.150",
"metrics": {},
"published": "2026-10-05T02:16:54.150",
"references": [
{
"source": "security@mediatek.com",
"url": "https://www.mediatek.com/product-security-bulletin/October-2026"
}
],
"sourceIdentifier": "security@mediatek.com",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "security@mediatek.com",
"type": "Primary"
}
]
}
}
}
}
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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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