CVE-2026-20431 | MediaTek MT8883 Base Station allocation of resources (MSV-4467 / EUVD-2026-19564)

VDB-355706 · CVE-2026-20431 · MSV-4467 MEDIATEK MT8883 BASE STATION ALLOCATION OF RESOURCES HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.2 $0-$5k 1.95+ 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 vulnerability database at EUVD (EUVD-2026-19564). Productinfo Type Chip Software Vendor MediaTek Name MT6813 MT6815 MT6835 MT6878 MT6897 MT6899 MT6986 MT6991 MT6993 MT8668 MT8676 MT8678 MT8755 MT8775 MT8792 MT8793 MT8863 MT8873 MT8883 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 Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock 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 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 04/07/2026 +0 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: 🔒 Entryinfo Created: 04/07/2026 07:21 Updated: 04/07/2026 08:30 Changes: 04/07/2026 07:21 (55), 04/07/2026 08:30 (1) Complete: 🔍 Cache ID: 99:ACB:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸