Local information disclosure via missing permission check
Published Aug 3, 2026 · Updated Aug 3, 2026
Information disclosure in MediaTek chipset Telephony allows local users to read restricted data through an improperly exported Android component. The Telephony component omits a permission check that should restrict which local applications can access information exposed by the component. Exploitation requires local access but no additional execution privileges or user interaction; MediaTek has not disclosed the entry point or data exposed.
Summary
What happened
Information disclosure in MediaTek chipset Telephony allows local users to read restricted data through an improperly exported Android component. The Telephony component omits a permission check that should restrict which local applications can access information exposed by the component. Exploitation requires local access but no additional execution privileges or user interaction; MediaTek has not disclosed the entry point or data exposed.
The record
- CVE
- CVE-2026-20470
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- MediaTek
- Product
- MediaTek Chipset
- Classifications
- CWE-926
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 3, 2026CVE publishedPublication date reported by the CVE source.
- Aug 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=MT6739
- Affected versionversion=MT6761
- Affected versionversion=MT6765
- Affected versionversion=MT6768
- Affected versionversion=MT6781
- Affected versionversion=MT6789
- Affected versionversion=MT6835
- Affected versionversion=MT6853
- Affected versionversion=MT6855
- Affected versionversion=MT6877
- Affected versionversion=MT6878
- Affected versionversion=MT6879
- Affected versionversion=MT6883
- Affected versionversion=MT6885
- Affected versionversion=MT6886
- Affected versionversion=MT6889
- Affected versionversion=MT6893
- Affected versionversion=MT6895
- Affected versionversion=MT6897
- Affected versionversion=MT6899
- Affected versionversion=MT6983
- Affected versionversion=MT6985
- Affected versionversion=MT6989
- Affected versionversion=MT6991
- Affected versionversion=MT6993
- Affected versionversion=MT8668
- Affected versionversion=MT8676
- Affected versionversion=MT8678
- Affected versionversion=MT8755
- Affected versionversion=MT8765
- Affected versionversion=MT8766
- Affected versionversion=MT8766R
- Affected versionversion=MT8768
- Affected versionversion=MT8775
- Affected versionversion=MT8781
- Affected versionversion=MT8792
- Affected versionversion=MT8796
- Affected versionversion=MT8798
- Affected versionversion=MT8863
- Affected versionversion=MT8873
- Affected versionversion=MT8883
- Affected versionversion=MT8893
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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