FKIE_CVE-2026-20477
Vulnerability from fkie_nvd - Published: 2026-08-03 03:16 - Updated: 2026-08-19 17:31
Severity
Summary
In display, there is a possible out of bounds write due to a missing bounds check. 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: ALPS11009963; Issue ID: MSV-7658.
References
| URL | Tags | ||
|---|---|---|---|
| security@mediatek.com | https://www.mediatek.com/product-security-bulletin/August-2026 | Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mediatek | mt8910_firmware | - | |
| mediatek | mt8910 | - | |
| mediatek | mt6991_firmware | - | |
| mediatek | mt6991 | - | |
| mediatek | mt6993_firmware | - | |
| mediatek | mt6993 | - | |
| mediatek | mt8188_firmware | - | |
| mediatek | mt8188 | - | |
| mediatek | mt8189_firmware | - | |
| mediatek | mt8189 | - | |
| mediatek | mt8668_firmware | - | |
| mediatek | mt8668 | - | |
| mediatek | mt8676_firmware | - | |
| mediatek | mt8676 | - | |
| mediatek | mt8678_firmware | - | |
| mediatek | mt8678 | - | |
| mediatek | mt8781_firmware | - | |
| mediatek | mt8781 | - | |
| mediatek | mt8799_firmware | - | |
| mediatek | mt8799 | - |
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"id": "CVE-2026-20477",
"lastModified": "2026-08-19T17:31:27.687",
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"attackVector": "LOCAL",
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"baseScore": 6.0,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
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"role": "CISA Coordinator",
"timestamp": "2026-08-04T00:00:00+00:00",
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"published": "2026-08-03T03:16:42.750",
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}
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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.
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.
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