CVE-2025-20632
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00397139; Issue ID: MSV-2188.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA vulnerability in the WLAN AP driver allows an out-of-bounds write due to incorrect bounds checking. This enables local privilege escalation without requiring user interaction or additional execution privileges. The flaw stems from improper boundary validation in memory access operations within the wireless driver code.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 7.6.7.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Mediatek SDK installationLocate the Mediatek SDK installation directory or check system information for Mediatek software components. Common paths may include /opt/mediatek, /usr/share/mediatek, or check package manager for mediatek-sdk packages.Affected if Mediatek SDK is installed and the version number is 7.6.7.2 or lower
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Check WLAN AP driver presenceExamine loaded kernel modules or system services for wireless driver components. On Mediatek-based devices, look for wireless AP driver modules (typically named with mt7xxx, wlan, or ap prefix in kernel module listings).Affected if WLAN AP driver is loaded or present on the system
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Determine WLAN driver versionQuery the installed wireless driver version through system utilities such as 'modinfo' for kernel modules, 'wlancfg' or vendor-specific tools provided by Mediatek SDK for firmware/driver versions.Affected if Driver version cannot be determined or matches the vulnerable release <= 7.6.7.2
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Verify SDK component versionsReview SDK release notes, changelogs, or configuration files within the Mediatek SDK installation directory for the wlan driver component version numbers.Affected if WLAN AP driver component version in the SDK is 7.6.7.2 or earlier
The environment is affected if Mediatek SDK version 7.6.7.2 or lower is installed with the WLAN AP driver enabled or present.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the vendor patch (WCNCR00397139) to update the WLAN AP driver. This typically involves firmware or driver updates from the device manufacturer.
- Consultation2.0 h
- Implementation1.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,464.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-20632 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-20632 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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