CVE-2025-20680 Details
Description
In Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418044; Issue ID: MSV-3482.
A heap overflow vulnerability has been identified in the Bluetooth driver of certain MediaTek chipsets. This issue arises from an incorrect bounds check, leading to a possible out-of-bounds write. Exploitation of this vulnerability could allow for local escalation of privileges, although it requires user execution privileges. Notably, no user interaction is needed for the exploitation to occur. The vulnerability affects MediaTek chipsets MT7902, MT7920, MT7921, MT7922, MT7925, and MT7927, specifically in the NB SDK release 3.6 and earlier.
MediaTek has issued a patch for this vulnerability, which can be applied by device manufacturers. Instructions for applying the patch are available through the MediaTek contact person for OEMs.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 11, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://corp.mediatek.com/product-security-bulletin/July-2025 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mediatek nbiot sdk | <= 3.6 |
CPE
Remediation
| |
| mediatek mt7902 | All versions |
CPE
Remediation
| |
| mediatek mt7920 | All versions |
CPE
Remediation
| |
| mediatek mt7921 | All versions |
CPE
Remediation
| |
| mediatek mt7922 | All versions |
CPE
Remediation
| |
| mediatek mt7925 | All versions |
CPE
Remediation
| |
| mediatek mt7927 | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jul 14, 2025 | Initial Analysis | [email protected] |
| Jul 8, 2025 | CVE Modified | CISA-ADP |
| Jul 8, 2025 | New CVE Received | [email protected] |