MediaTek MT6890/MT6988/MT6990 wifi out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.5$0-$5k1.86

Summaryinfo

A vulnerability identified as problematic has been detected in MediaTek MT6890, MT6988 and MT6990. This impacts an unknown function of the component wifi. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2026-20494. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in MediaTek MT6890, MT6988 and MT6990 (affected version not known). Affected by this vulnerability is some unknown functionality of the component wifi. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In wifi, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10960006 / BORA00155314, BORA00155001, BORA00154907; Issue ID: MSV-7570.

It is possible to read the advisory at mediatek.com. This vulnerability is known as CVE-2026-20494 since 11/03/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS10960006/BORA00155314/BORA00155001/BORA00154907 is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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: ALPS10960006/BORA00155314/BORA00155001/BORA00154907

Timelineinfo

11/03/2025 CVE reserved
08/03/2026 +272 days Advisory disclosed
08/03/2026 +0 days VulDB entry created
08/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: mediatek.com
Status: Confirmed

CVE: CVE-2026-20494 (🔒)
GCVE (CVE): GCVE-0-2026-20494
GCVE (VulDB): GCVE-100-385471

Entryinfo

Created: 08/03/2026 05:25
Changes: 08/03/2026 05:25 (54)
Complete: 🔍
Cache ID: 216::103

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