MediaTek MT8766 Firmware vulnerabilities

21 CVEs affecting MediaTek MT8766 Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-20544, published 2026-10-05.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2025-20659, published 2025-04-07. Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days. In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker,…
CVE-2026-20541, published 2026-10-05. Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days. In Modem, there is a possible out of bounds read due to a missing permission check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the…
CVE-2026-20540, published 2026-10-05. Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days. In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker,…
CVE-2026-20539, published 2026-10-05. Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days. In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker,…
CVE-2026-20538, published 2026-10-05. Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days. In Modem, there is a possible out of bounds read due to a missing permission check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the…
CVE-2026-20534, published 2026-10-05. Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days. In Modem, there is a possible out of bounds read due to an incorrect bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the…
CVE-2026-20483, published 2026-08-03. High severity, CVSS 7.7. EPSS: 0.2% chance of exploitation in the next 30 days. In Telephony, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User…
CVE-2026-20544, published 2026-10-05. Medium severity, CVSS 6.8. EPSS: 0.2% chance of exploitation in the next 30 days. In meta, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional…
CVE-2026-20475, published 2026-08-03. Medium severity, CVSS 6.0. EPSS: 0.2% chance of exploitation in the next 30 days. In display, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege.…
CVE-2026-20473, published 2026-08-03. Medium severity, CVSS 6.0. EPSS: 0.2% chance of exploitation in the next 30 days. In display, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User…

Latest

CVE-2026-20543, published 2026-10-05. Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days. In Modem, there is a possible information disclosure due to a logic error. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not…
CVE-2026-20529, published 2026-10-05. Medium severity, CVSS 6.7. EPSS: 0.1% chance of exploitation in the next 30 days. In battery, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege.…
CVE-2026-20489, published 2026-08-03. Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days. In display, there is a possible information disclosure due to an integer overflow. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User…
CVE-2026-20488, published 2026-08-03. Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days. In display, there is a possible information disclosure due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege.…