CVE-2025-20661

Local privilege escalation via unchecked buffer read

Published Apr 7, 2025 · Updated Feb 26, 2026

Out-of-bounds read in MediaTek MT9972 PlayReady TA on Android 12.0 and 14.0 allows local users to elevate privileges. The trusted application can read beyond a buffer because it processes an undisclosed input without the required bounds check. Exploitation requires prior System privilege and no user interaction; MediaTek has not disclosed the input path or resulting privilege level.

CVSS severity6.7
Medium
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in MediaTek MT9972 PlayReady TA on Android 12.0 and 14.0 allows local users to elevate privileges. The trusted application can read beyond a buffer because it processes an undisclosed input without the required bounds check. Exploitation requires prior System privilege and no user interaction; MediaTek has not disclosed the input path or resulting privilege level.

The record

CVE
CVE-2025-20661
Published
Apr 7, 2025
Updated
Feb 26, 2026
Vendor
MediaTek
Product
MT9972
Classifications
CWE-125, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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.

  1. Affected versionversion=Android 12.0, 14.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MediaTek · MT9972version=Android 12.0, 14.0

Published CVSS scores

6.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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