Heap-based buffer overflow in MediaTek chipset
Priority LOW 31CWE-122Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
In Telephony, there is a possible memory corruption due to a heap buffer overflow. 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: ALPS11006447; Issue ID: MSV-7871.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00159 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MediaTek | MediaTek chipset | MT6739; MT6761; MT6765; MT6768; MT6781; MT6789; MT6833; MT6853; MT6855; MT6877; MT6883; MT6885; MT6889; MT6893; MT8695; MT8696; MT8765; MT8766; MT8766R; MT8768; MT8781; MT8791 | — | No fix listed | CNA |
- MediaTek chipset VendorMediaTek Affected MT6739; MT6761; MT6765; MT6768; MT6781; MT6789; MT6833; MT6853; MT6855; MT6877; MT6883; MT6885; MT6889; MT6893; MT8695; MT8696; MT8765; MT8766; MT8766R; MT8768; MT8781; MT8791 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20462
- 2026-10-03 Alias added: GHSA-39rh-f5c6-gchq
References
More MediaTek vulnerabilities
- TI-2020-00067 Out-of-bounds write in Android KEVCVSS 3.1HIGH 7.8
- TI-2024-13053 Improper input validation in MediaTek MT6890, MT7915, MT7916, MT7981, MT7986 CVSS 3.1CRITICAL 9.8
- TI-2025-14725 Integer overflow in MediaTek MT6781, MT6789, MT6835, MT6855, MT6878, MT6879, MT6886… CVSS 3.1MEDIUM 6.5
- TI-2024-13114 Memory corruption in MediaTek MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855… CVSS 3.1CRITICAL 9.8
- TI-2022-14283 Command injection in MediaTek EN7528, EN7580 CVSS 3.1CRITICAL 9.8
- TI-2021-11684 Command injection in MediaTek EN7528, EN7580 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-20462 · CVE Program
- CVE-2026-20462 · NVD
- FIRST EPSS
- GHSA-39rh-f5c6-gchq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences