MediaTek MT8678 adsp use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k1.21

Summaryinfo

A vulnerability has been found in MediaTek MT6858, MT6878, MT6881, MT6897, MT6899, MT6989, MT6991, MT6993, MT8168, MT8186, MT8188, MT8189, MT8195, MT8196, MT8365, MT8367, MT8390, MT8391, MT8668 and MT8678 and classified as very critical. The impacted element is an unknown function of the component adsp. This manipulation causes use after free. This vulnerability appears as CVE-2026-20570. The attack requires local access. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as very critical was found in MediaTek MT6858, MT6878, MT6881, MT6897, MT6899, MT6989, MT6991, MT6993, MT8168, MT8186, MT8188, MT8189, MT8195, MT8196, MT8365, MT8367, MT8390, MT8391, MT8668 and MT8678. Affected by this vulnerability is an unknown part of the component adsp. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In adsp, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11431474; Issue ID: MSV-9926.

The advisory is shared at mediatek.com. This vulnerability is known as CVE-2026-20570 since 11/03/2025. The exploitation appears to be easy. An attack has to be approached locally. Additional levels of successful authentication are necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/02/2026).

Applying the patch ALPS11431474 is able to eliminate this problem.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: ALPS11431474

Timelineinfo

11/03/2025 CVE reserved
11/02/2026 +364 days Advisory disclosed
11/02/2026 +0 days VulDB entry created
11/02/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: mediatek.com
Status: Confirmed

CNA: MediaTek
CVE: CVE-2026-20570 (🔒)

GCVE (CVE): GCVE-0-2026-20570
GCVE (VulDB): GCVE-100-429733

Entryinfo

Created: 11/02/2026 04:04
Changes: 11/02/2026 04:04 (54)
Complete: 🔍
Cache ID: 216::103

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