MediaTek MT8893 Base Station authentication bypass

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00-

Summaryinfo

A vulnerability was found in MediaTek MT2735, MT2737, MT6779, MT6781, MT6783, MT6785, MT6789, MT6813, MT6833, MT6835, MT6853, MT6855, MT6858, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6986D, MT6988, MT6989, MT6990, MT6991, MT6993, MT8673, MT8675, MT8676, MT8678, MT8755, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788, MT8788E, MT8789, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8797, MT8798, MT8863, MT8873, MT8883 and MT8893. It has been rated as critical. The impacted element is an unknown function of the component Base Station Handler. Performing a manipulation results in authentication bypass. This vulnerability is reported as CVE-2026-20460. The attack is possible to be carried out remotely. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in MediaTek MT2735, MT2737, MT6779, MT6781, MT6783, MT6785, MT6789, MT6813, MT6833, MT6835, MT6853, MT6855, MT6858, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6986D, MT6988, MT6989, MT6990, MT6991, MT6993, MT8673, MT8675, MT8676, MT8678, MT8755, MT8765, MT8766, MT8766R, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788, MT8788E, MT8789, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8797, MT8798, MT8863, MT8873, MT8883 and MT8893. This affects an unknown function of the component Base Station Handler. The manipulation with an unknown input leads to a authentication bypass vulnerability. CWE is classifying the issue as CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Modem, there is a possible information disclosure due to improper input validation. This could lead to remote information disclosure, 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: MOLY01811421; Issue ID: MSV-6788.

The advisory is shared at corp.mediatek.com. This vulnerability is uniquely identified as CVE-2026-20460 since 11/03/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Applying the patch MSV-6788 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: 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: Authentication bypass
CWE: CWE-288 / CWE-287
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-6788

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-6788
Status: Confirmed

CVE: CVE-2026-20460 (🔒)
GCVE (CVE): GCVE-0-2026-20460
GCVE (VulDB): GCVE-100-374997

Entryinfo

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

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