CVE-2025-20633

Adjacent code execution via incorrect bounds check

Published Feb 3, 2025 · Updated Mar 18, 2025

Out-of-bounds write in the MediaTek WLAN AP driver in SDK release 7.4.0.1 and earlier allows remote attackers to execute code. MediaTek reports that an incorrect bounds check lets the driver write beyond its intended buffer, but the affected routine and input field remain undisclosed. An attacker must be within wireless reach of an affected MT7603, MT7615, MT7622, or MT7915 device; no privileges or user interaction are required.

CVSS severity8.8
High
EPSS probability0.33%
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 the MediaTek WLAN AP driver in SDK release 7.4.0.1 and earlier allows remote attackers to execute code. MediaTek reports that an incorrect bounds check lets the driver write beyond its intended buffer, but the affected routine and input field remain undisclosed. An attacker must be within wireless reach of an affected MT7603, MT7615, MT7622, or MT7915 device; no privileges or user interaction are required.

The record

CVE
CVE-2025-20633
Published
Feb 3, 2025
Updated
Mar 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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 vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:A/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.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

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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