CVE-2026-20516

Local service interruption via unrestricted MiracastService access

Published Sep 7, 2026 · Updated Sep 7, 2026

Improperly exported MiracastService components in affected MediaTek chipsets allow local users to interrupt service availability. MiracastService fails to restrict which Android applications can invoke the exported service, creating a confused-deputy path. Exploitation requires local user-level execution, needs no user interaction, and is limited to denial of service with no reported data access or modification.

CVSS severity5.5
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improperly exported MiracastService components in affected MediaTek chipsets allow local users to interrupt service availability. MiracastService fails to restrict which Android applications can invoke the exported service, creating a confused-deputy path. Exploitation requires local user-level execution, needs no user interaction, and is limited to denial of service with no reported data access or modification.

The record

CVE
CVE-2026-20516
Published
Sep 7, 2026
Updated
Sep 7, 2026
Vendor
MediaTek
Product
MediaTek Chipset
Classifications
CWE-926, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=MT5586
  2. Affected versionversion=MT5862
  3. Affected versionversion=MT5867
  4. Affected versionversion=MT5870
  5. Affected versionversion=MT5871
  6. Affected versionversion=MT5872
  7. Affected versionversion=MT5873
  8. Affected versionversion=MT5876
  9. Affected versionversion=MT5877
  10. Affected versionversion=MT5879
  11. Affected versionversion=MT5888
  12. Affected versionversion=MT5889
  13. Affected versionversion=MT5895
  14. Affected versionversion=MT5896
  15. Affected versionversion=MT5897
  16. Affected versionversion=MT9015
  17. Affected versionversion=MT9025
  18. Affected versionversion=MT9026
  19. Affected versionversion=MT9027
  20. Affected versionversion=MT9032
  21. Affected versionversion=MT9603
  22. Affected versionversion=MT9618
  23. Affected versionversion=MT9633
  24. Affected versionversion=MT9649
  25. Affected versionversion=MT9660
  26. Affected versionversion=MT9676
  27. Affected versionversion=MT9687
  28. Affected versionversion=MT9689
  29. Affected versionversion=MT9972

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

MediaTek · MediaTek Chipsetversion=MT5586; version=MT5862; version=MT5867; version=MT5870; version=MT5871; version=MT5872; version=MT5873; version=MT5876; version=MT5877; version=MT5879; version=MT5888; version=MT5889; version=MT5895; version=MT5896; version=MT5897; version=MT9015; version=MT9025; version=MT9026; version=MT9027; version=MT9032; version=MT9603; version=MT9618; version=MT9633; version=MT9649; version=MT9660; version=MT9676; version=MT9687; version=MT9689; version=MT9972

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-926Improper Export of Android Application Components
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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