EUVD-2026-40876
GHSA-hq5v-pc42-8w5f
Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Local-only vector (AV:L) with high privilege prerequisite (PR:H) matches the System-level access requirement; full C/I/A impact reflects post-escalation control.
Primary rating from Vendor (MediaTek).
CVSS VectorVendor: MediaTek
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
In Modem, there is a possible escalation of privilege due to a permissions bypass. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: MOLY01716533; Issue ID: MSV-6309.
AnalysisAI
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. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to have already obtained System-level privilege on the target Android device running an affected MediaTek chipset - this is explicitly stated in the CVE description and confirmed by the PR:H metric in the CVSS vector (AV:L/AC:L/PR:H/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.7 (AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H) accurately characterizes the key limiting factor: an attacker must already possess System-level privilege on the target device before this vulnerability is exploitable. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has already gained System-level code execution on a MediaTek-based Android device - for example, by chaining an application-layer vulnerability with a kernel privilege escalation - targets the Modem component using this permissions bypass to escalate beyond System to a higher-privileged context such as the baseband or trusted execution environment. No user interaction is required once System access is established. … |
| Remediation | MediaTek has released a patch identified as Patch ID MOLY01716533, disclosed in the July 2026 MediaTek Product Security Bulletin at https://corp.mediatek.com/product-security-bulletin/July-2026. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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