CVE-2026-20480
MediaTek Audio HAL Heap Buffer Overflow
Description
In Audio HAL, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10960023 (Note: For MT6880, MT6890, MT6980D, MT6988, MT6990) / AUTO00851189 (Note: For MT2735, MT3737); Issue ID: MSV-7586.
INFO
Published Date :
Aug. 3, 2026, 3:16 a.m.
Last Modified :
Aug. 19, 2026, 5:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-20480
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Apply patch ALPS10960023 for MT6880, MT6890, MT6980D, MT6988, MT6990.
- Apply patch AUTO00851189 for MT2735, MT3737.
- Update Audio HAL to a patched version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-20480.
| URL | Resource |
|---|---|
| https://www.mediatek.com/product-security-bulletin/August-2026 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-20480 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-20480
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20480 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-20480 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 19, 2026
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6880_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt2735_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt2737_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt2737:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6890_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6980d_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6980d:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6988_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6988:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6990_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:* Added Reference Type MediaTek, Inc.: https://www.mediatek.com/product-security-bulletin/August-2026 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 03, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added SSVC {'id': 'CVE-2026-20480', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-03T19:01:58.407684Z'} -
New CVE Received by [email protected]
Aug. 03, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'MediaTek, Inc.', 'product': 'MediaTek chipset', 'versions': [{'status': 'affected', 'version': 'MT2735'}, {'status': 'affected', 'version': 'MT2737'}, {'status': 'affected', 'version': 'MT6880'}, {'status': 'affected', 'version': 'MT6890'}, {'status': 'affected', 'version': 'MT6980D'}, {'status': 'affected', 'version': 'MT6988'}, {'status': 'affected', 'version': 'MT6990'}], 'defaultStatus': 'unaffected'}] Added Description In Audio HAL, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10960023 (Note: For MT6880, MT6890, MT6980D, MT6988, MT6990) / AUTO00851189 (Note: For MT2735, MT3737); Issue ID: MSV-7586. Added CWE CWE-122 Added Reference https://www.mediatek.com/product-security-bulletin/August-2026