MediaTek MT8883 Base Station allocation of resources

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in MediaTek MT6813, MT6815, MT6835, MT6878, MT6897, MT6899, MT6986, MT6991, MT6993, MT8668, MT8676, MT8678, MT8755, MT8775, MT8792, MT8793, MT8863, MT8873 and MT8883. Affected is an unknown function of the component Base Station Handler. Such manipulation leads to allocation of resources. This vulnerability is documented as CVE-2026-20431. The attack can be executed remotely. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6813, MT6815, MT6835, MT6878, MT6897, MT6899, MT6986, MT6991, MT6993, MT8668, MT8676, MT8678, MT8755, MT8775, MT8792, MT8793, MT8863, MT8873 and MT8883. It has been rated as critical. Affected by this issue is an unknown functionality of the component Base Station Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. CVE summarizes:

In Modem, there is a possible system crash due to a logic error. 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: MOLY01106496; Issue ID: MSV-4467.

The advisory is available at corp.mediatek.com. This vulnerability is handled as CVE-2026-20431 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. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Applying the patch MSV-4467 is able to eliminate this problem.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202604-1407) and EUVD (EUVD-2026-19564). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Chip Software

Vendor

MediaTek

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: MSV-4467

Timelineinfo

11/03/2025 CVE reserved
04/07/2026 +154 days Advisory disclosed
04/07/2026 +0 days VulDB entry created
04/09/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: MSV-4467
Status: Confirmed

CVE: CVE-2026-20431 (🔒)
GCVE (CVE): GCVE-0-2026-20431
GCVE (VulDB): GCVE-100-355706
EUVD: 🔒
CNNVD: CNNVD-202604-1407 - MediaTek Chipsets 安全漏洞

Entryinfo

Created: 04/07/2026 07:21
Updated: 04/09/2026 14:50
Changes: 04/07/2026 07:21 (55), 04/07/2026 08:30 (1), 04/09/2026 03:04 (6), 04/09/2026 14:50 (1)
Complete: 🔍
Cache ID: 216::103

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