CVE-2026-20484 (GCVE-0-2026-20484)
Vulnerability from cvelistv5 – Published: 2026-08-03 02:05 – Updated: 2026-08-03 19:45
VLAI
EPSS
VEX
Summary
In TFA, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11053160; Issue ID: MSV-8004.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 19:44 UTC
CWE
- CWE-201 - Insertion of Sensitive Information Into Sent Data
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT6739
Affected: MT6761 Affected: MT6765 Affected: MT6768 Affected: MT6781 Affected: MT6789 Affected: MT6833 Affected: MT6835 Affected: MT6853 Affected: MT6855 Affected: MT6877 Affected: MT6878 Affected: MT6879 Affected: MT6883 Affected: MT6885 Affected: MT6886 Affected: MT6889 Affected: MT6893 Affected: MT6895 Affected: MT6897 Affected: MT6899 Affected: MT6983 Affected: MT6985 Affected: MT6988 Affected: MT6989 Affected: MT6991 Affected: MT6993 Affected: MT8171 Affected: MT8188 Affected: MT8189 Affected: MT8390 Affected: MT8391 Affected: MT8668 Affected: MT8676 Affected: MT8678 Affected: MT8696 Affected: MT8792 Affected: MT8793 Affected: MT8799 |
guessed |
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"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.4, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20484\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-03T19:44:46.089761Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-03T19:45:01.992Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"MediaTek, Inc.\", \"product\": \"MediaTek chipset\", \"versions\": [{\"status\": \"affected\", \"version\": \"MT6739\"}, {\"status\": \"affected\", \"version\": \"MT6761\"}, {\"status\": \"affected\", \"version\": \"MT6765\"}, {\"status\": \"affected\", \"version\": \"MT6768\"}, {\"status\": \"affected\", \"version\": \"MT6781\"}, {\"status\": \"affected\", \"version\": \"MT6789\"}, {\"status\": \"affected\", \"version\": \"MT6833\"}, {\"status\": \"affected\", \"version\": \"MT6835\"}, {\"status\": \"affected\", \"version\": \"MT6853\"}, {\"status\": \"affected\", \"version\": \"MT6855\"}, {\"status\": \"affected\", \"version\": \"MT6877\"}, {\"status\": \"affected\", \"version\": \"MT6878\"}, {\"status\": \"affected\", \"version\": \"MT6879\"}, {\"status\": \"affected\", \"version\": \"MT6883\"}, {\"status\": \"affected\", \"version\": \"MT6885\"}, {\"status\": \"affected\", \"version\": \"MT6886\"}, {\"status\": \"affected\", \"version\": \"MT6889\"}, {\"status\": \"affected\", \"version\": \"MT6893\"}, {\"status\": \"affected\", \"version\": \"MT6895\"}, {\"status\": \"affected\", \"version\": \"MT6897\"}, {\"status\": \"affected\", \"version\": \"MT6899\"}, {\"status\": \"affected\", \"version\": \"MT6983\"}, {\"status\": \"affected\", \"version\": \"MT6985\"}, {\"status\": \"affected\", \"version\": \"MT6988\"}, {\"status\": \"affected\", \"version\": \"MT6989\"}, {\"status\": \"affected\", \"version\": \"MT6991\"}, {\"status\": \"affected\", \"version\": \"MT6993\"}, {\"status\": \"affected\", \"version\": \"MT8171\"}, {\"status\": \"affected\", \"version\": \"MT8188\"}, {\"status\": \"affected\", \"version\": \"MT8189\"}, {\"status\": \"affected\", \"version\": \"MT8390\"}, {\"status\": \"affected\", \"version\": \"MT8391\"}, {\"status\": \"affected\", \"version\": \"MT8668\"}, {\"status\": \"affected\", \"version\": \"MT8676\"}, {\"status\": \"affected\", \"version\": \"MT8678\"}, {\"status\": \"affected\", \"version\": \"MT8696\"}, {\"status\": \"affected\", \"version\": \"MT8792\"}, {\"status\": \"affected\", \"version\": \"MT8793\"}, {\"status\": \"affected\", \"version\": \"MT8799\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://www.mediatek.com/product-security-bulletin/August-2026\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In TFA, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11053160; Issue ID: MSV-8004.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-201\", \"description\": \"CWE-201 Insertion of Sensitive Information Into Sent Data\"}]}], \"providerMetadata\": {\"orgId\": \"ee979b05-11f8-4f25-a7e0-a1fa9c190374\", \"shortName\": \"MediaTek\", \"dateUpdated\": \"2026-08-03T02:05:48.650Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20484\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-03T19:45:07.040Z\", \"dateReserved\": \"2025-11-03T01:30:59.022Z\", \"assignerOrgId\": \"ee979b05-11f8-4f25-a7e0-a1fa9c190374\", \"datePublished\": \"2026-08-03T02:05:48.650Z\", \"assignerShortName\": \"MediaTek\"}",
"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.
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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