MediaTek MT8893 Base Station out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00-

Summaryinfo

A vulnerability described as critical has been identified in MediaTek MT2737, MT6813, MT6835, MT6858, MT6878, MT6879, MT6886, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6988, MT6989, MT6990, MT6991, MT6993, MT8673, MT8676, MT8678, MT8755, MT8775, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8863, MT8873, MT8883 and MT8893. Affected by this issue is some unknown functionality of the component Base Station Handler. Such manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2026-20461. The attack can be launched remotely. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in MediaTek MT2737, MT6813, MT6835, MT6858, MT6878, MT6879, MT6886, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6988, MT6989, MT6990, MT6991, MT6993, MT8673, MT8676, MT8678, MT8755, MT8775, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8863, MT8873, MT8883 and MT8893. It has been rated as critical. Affected by this issue is an unknown code block of the component Base Station Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.

The advisory is available at corp.mediatek.com. This vulnerability is handled as CVE-2026-20461 since 11/03/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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 07/01/2026).

Applying the patch MSV-6486 is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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 write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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: MSV-6486

Timelineinfo

11/03/2025 CVE reserved
07/01/2026 +239 days Advisory disclosed
07/01/2026 +0 days VulDB entry created
07/01/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: MSV-6486
Status: Confirmed

CVE: CVE-2026-20461 (🔒)
GCVE (CVE): GCVE-0-2026-20461
GCVE (VulDB): GCVE-100-375002

Entryinfo

Created: 07/01/2026 07:14
Changes: 07/01/2026 07:14 (56)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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