MediaTek MT8793 double free

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k2.44-

Summaryinfo

A vulnerability was found in MediaTek MT2735, MT2737, MT6768, MT6781, MT6789, MT6853, MT6855, MT6877, MT6878, MT6885, MT6886, MT6890, MT6895, MT6897, MT6899, MT6980D, MT6985, MT6988, MT6989, MT6990, MT6991, MT6993, MT8168, MT8186, MT8188, MT8189, MT8195, MT8196, MT8365, MT8367, MT8390, MT8391, MT8668, MT8678 and MT8793 and classified as very critical. This affects an unknown function. Such manipulation leads to double free. This vulnerability is traded as CVE-2026-20573. An attack has to be approached locally. There is no exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in MediaTek MT2735, MT2737, MT6768, MT6781, MT6789, MT6853, MT6855, MT6877, MT6878, MT6885, MT6886, MT6890, MT6895, MT6897, MT6899, MT6980D, MT6985, MT6988, MT6989, MT6990, MT6991, MT6993, MT8168, MT8186, MT8188, MT8189, MT8195, MT8196, MT8365, MT8367, MT8390, MT8391, MT8668, MT8678 and MT8793. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In afe, there is a possible memory corruption due to double 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: ALPS11431412; Issue ID: MSV-9923.

The advisory is available at mediatek.com. This vulnerability is handled as CVE-2026-20573 since 11/03/2025. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/02/2026).

Applying the patch ALPS11431412 is able to eliminate this problem.

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Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
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: Double free
CWE: CWE-415 / 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: ALPS11431412

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-2026-20573 (🔒)

GCVE (CVE): GCVE-0-2026-20573
GCVE (VulDB): GCVE-100-429734

Entryinfo

Created: 11/02/2026 04:04
Changes: 11/02/2026 04:04 (53)
Complete: 🔍
Cache ID: 216::103

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