NULL pointer dereference in MediaTek chipset
Priority LOW 24CWE-476Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-476.
Summary
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, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01826924; Issue ID: MSV-7301.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00286 21st 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
- Partial
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 | MT2735; MT2737; MT6739; MT6761; MT6762; MT6763; MT6765; MT6767; MT6768; MT6769; MT6771; MT6779; MT6781; MT6783; MT6785; MT6789; MT6833; MT6853; MT6855; MT6873; MT6875; MT6877; MT6879; MT6880; MT6883; MT6885; MT6886; MT6889; MT6890; MT6891; MT6893; MT6895; MT6896; MT6980; MT6983; MT6985; MT6989; MT6990; MT8666; MT8667; MT8673; MT8675; MT8765; MT8766; MT8766R; MT8768; MT8771; MT8781; MT8786; MT8788; MT8788E; MT8789; MT8791; MT8791T; MT8795T; MT8796; MT8797; MT8798; MT8893 | — | No fix listed | CNA |
- MediaTek chipset VendorMediaTek Affected MT2735; MT2737; MT6739; MT6761; MT6762; MT6763; MT6765; MT6767; MT6768; MT6769; MT6771; MT6779; MT6781; MT6783; MT6785; MT6789; MT6833; MT6853; MT6855; MT6873; MT6875; MT6877; MT6879; MT6880; MT6883; MT6885; MT6886; MT6889; MT6890; MT6891; MT6893; MT6895; MT6896; MT6980; MT6983; MT6985; MT6989; MT6990; MT8666; MT8667; MT8673; MT8675; MT8765; MT8766; MT8766R; MT8768; MT8771; MT8781; MT8786; MT8788; MT8788E; MT8789; MT8791; MT8791T; MT8795T; MT8796; MT8797; MT8798; MT8893 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20457
- 2026-10-03 Alias added: GHSA-r5cc-gr9f-ch8c
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-2026-20457 · CVE Program
- CVE-2026-20457 · NVD
- FIRST EPSS
- GHSA-r5cc-gr9f-ch8c · 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