CVE-2025-20749

Local privilege escalation via charger stack overflow

Published Nov 4, 2025 · Updated Nov 4, 2025

Stack overflow in MediaTek charger on Android 14.0 through 16.0 allows local users with System privilege to elevate access. The charger component writes beyond a stack buffer because it omits a required bounds check, but MediaTek has not disclosed the specific input path or routine. Exploitation requires prior System privilege and no user interaction; successful exploitation provides additional local privileges.

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

Stack overflow in MediaTek charger on Android 14.0 through 16.0 allows local users with System privilege to elevate access. The charger component writes beyond a stack buffer because it omits a required bounds check, but MediaTek has not disclosed the specific input path or routine. Exploitation requires prior System privilege and no user interaction; successful exploitation provides additional local privileges.

The record

CVE
CVE-2025-20749
Published
Nov 4, 2025
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-121, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1404Exploitation 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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