MediaTek Modem Remote DoS and Privilege Escalation

Remote privilege escalation in the baseband modem firmware of dozens of MediaTek chipsets allows an attacker operating a rogue base station to corrupt modem memory via a missing bounds check (out-of-bounds write, CWE-787). Once a target UE camps on the attacker-controlled cell, exploitation requires no user interaction and no pre-existing privileges, potentially yielding privilege escalation within the modem subsystem. Tracked in MediaTek's July 2026 Product Security Bulletin (Patch ID MOLY01402160); there is no public exploit identified at time of analysis and it is not listed in CISA KEV.

Local privilege escalation in the Modem component across 80+ MediaTek chipsets allows an attacker already holding System-level access to bypass permission enforcement (CWE-280) and escalate further within the device. The vulnerability is confirmed by MediaTek in their July 2026 Product Security Bulletin (Patch ID: MOLY01716533, Issue ID: MSV-6309) and affects a broad swath of chipsets spanning low-end to flagship tiers. No user interaction is required for exploitation, but the prerequisite of System-level access significantly constrains the realistic attack surface. No public exploit code or CISA KEV listing has been identified at time of analysis.

Remote denial of service in the MediaTek Modem firmware component affects approximately 60 chipset models via a null pointer dereference triggered when a target device connects to a rogue cellular base station. An attacker controlling a fake eNodeB or gNodeB can transmit crafted modem protocol messages that cause improper input validation to fail, crashing the modem and stripping affected devices of cellular connectivity. No public exploit has been identified at time of analysis, and CISA SSVC rates current exploitation status as none, indicating this remains a theoretical but technically feasible threat for well-resourced actors.

Remote denial-of-service in MediaTek modem firmware across 80+ chipset families allows an attacker operating a rogue cellular base station to crash affected devices by sending malformed input the modem fails to validate. The vulnerability (CWE-288) requires no privileges on the target device and no user interaction - a device that autonomously connects to the attacker's false base station is sufficient. No public exploit code has been identified at time of analysis, and SSVC classifies exploitation status as none, though the widespread chipset deployment across Android handsets and IoT hardware makes the affected attack surface extremely broad.

Information disclosure in MediaTek modem firmware across 67+ chipset models enables a network-adjacent attacker operating a rogue cellular base station to extract sensitive data from a victim's User Equipment (UE) without any privileges or user interaction. The root cause is improper input validation (CWE-288) in the modem baseband stack, allowing a fake cell tower to elicit confidential data from connected devices. No active exploitation has been confirmed by CISA KEV, and SSVC assessment rates exploitation as 'none' at time of analysis, though the architecture of the attack closely resembles IMSI-catcher and stingray-type tradecraft used in targeted surveillance operations.

Out-of-bounds write in MediaTek modem firmware allows a network-adjacent attacker controlling a rogue cellular base station to remotely crash affected User Equipment (UE), resulting in denial of service. Thirty-three distinct MediaTek chipsets - spanning flagship mobile SoCs (MT6991, MT6989, MT6985) to tablet and IoT chipsets (MT8795T, MT8893) - contain the vulnerable modem component identified under Patch IDs MOLY01267281 and MOLY01318201. No public exploit code has been identified at time of analysis, and the attack is non-trivial due to the requirement for attacker-controlled cellular infrastructure, but the sheer deployment scale of affected chipsets across Android devices makes the aggregate exposure significant.