CVE-2025-20696

Local privilege escalation via unchecked DA write

Published Aug 4, 2025 · Updated Aug 4, 2025

Out-of-bounds write in MediaTek DA on listed chipsets allows physically proximate attackers to gain elevated privileges through local input. DA processes attacker-controlled data without checking a destination buffer boundary, allowing a write beyond the intended buffer. Exploitation requires physical access and user interaction but no existing execution privilege; successful exploitation escalates local privilege.

CVSS severity6.8
Medium
EPSS probability0.12%
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 write in MediaTek DA on listed chipsets allows physically proximate attackers to gain elevated privileges through local input. DA processes attacker-controlled data without checking a destination buffer boundary, allowing a write beyond the intended buffer. Exploitation requires physical access and user interaction but no existing execution privilege; successful exploitation escalates local privilege.

The record

CVE
CVE-2025-20696
Published
Aug 4, 2025
Updated
Aug 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1068
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 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 vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8GitHub Advisory DatabaseCVSS:3.1/AV:P/AC:L/PR:N/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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