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Software Development KitApplication · Mediatek

CVE-2025-20732

MEDIUM · 5.3 CVSS v3.1 Published 2025-11-04
Fix available
A fix is available. Upgrade to after 7.6.7.2 or later.
See remediation →
55/100
Remediation priority · Elevated
Zero-click

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 · unedited
In 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 if a malicious actor has already obtained the System privilege (when OceReducedNeighborReport is disabled). User interaction is not needed for exploitation. Patch ID: WCNCR00441510; Issue ID: MSV-4139.

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 confidence

Out-of-bounds write vulnerability in the WLAN AP driver due to incorrect bounds checking in neighbor report handling. When OceReducedNeighborReport is disabled, a local attacker with existing System-level privileges can trigger the vulnerability to achieve privilege escalation without user interaction.

MitigationApply vendor patch WCNCR00441510 to address the bounds check error. Additionally, enable the OceReducedNeighborReport feature as a defense-in-depth measure if supported, and strictly limit System-level access to trusted local users.

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
Software Development KitApplication
Affected:<= 7.6.7.2
OpenwrtOperating system
Affected:= 19.07.0= 21.02.0

CVSS 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
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the system product and WLAN driver
    Run 'uname -a' or check '/etc/os-release' to determine if the system is running Mediatek SDK or OpenWrt. For Mediatek, check the WLAN driver module via 'lsmod | grep -i wlan' or 'modinfo mt76'
    Affected if The system is not running Mediatek SDK or OpenWrt - the detection does not apply
  2. Check the installed version against affected ranges
    For Mediatek SDK, check the SDK version via 'cat /etc/version' or check the firmware version. For OpenWrt, run 'cat /etc/openwrt_version' or 'cat /etc/os-release' to get the exact version number
    Affected if Mediatek SDK version is greater than 7.6.7.2, or OpenWrt version is neither 19.07.0 nor 21.02.0 - likely not affected
  3. Verify if OceReducedNeighborReport is disabled
    Check the WLAN AP driver configuration for the OceReducedNeighborReport setting. This may be found in the driver config file, via 'iwpriv' or 'iw' commands such as 'iwpriv [interface] get_para' or by examining the driver module parameters with 'modinfo mt76' and looking for related parameters. If available, check if it is explicitly set to disabled or 0
    Affected if OceReducedNeighborReport is explicitly disabled, the system is vulnerable when combined with the affected versions
  4. Confirm the WLAN AP driver is loaded
    Check that the WLAN AP driver is active by running 'iwconfig' or 'ip link show' to list wireless interfaces, or 'lsmod | grep mt' for Mediatek drivers
    Affected if No WLAN AP driver is loaded or active - the vulnerability cannot be triggered

The system is affected if it runs Mediatek SDK <= 7.6.7.2 or OpenWrt 19.07.0/21.02.0, uses the affected WLAN AP driver, and has OceReducedNeighborReport disabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to a release after 7.6.7.2
Interim mitigation

Apply vendor patch WCNCR00441510 to address the bounds check error. Additionally, enable the OceReducedNeighborReport feature as a defense-in-depth measure if supported, and strictly limit System-level access to trusted local users.

Fix this in Software Development Kit Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,560
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-20732 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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