Out-of-bounds write in MediaTek MT6813, MT6835, MT6835T, MT6878, MT6878M, MT6897, MT6899…
Priority LOW 37CWE-787Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- Required
- 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-787 and the CVSS impact.
Summary
In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01516959; Issue ID: MSV-3502.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00316 24th 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 | MT6813, MT6835, MT6835T, MT6878, MT6878M, MT6897, MT6899, MT6991, MT8676, MT8678, MT8792, MT8863, MT8873, MT8883 | Modem NR17, NR17R | — | No fix listed | CNA |
- MT6813, MT6835, MT6835T, MT6878, MT6878M, MT6897, MT6899, MT6991, MT8676, MT8678, MT8792, MT8863, MT8873, MT8883 VendorMediaTek Affected Modem NR17, NR17R Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:mediatek:nr17:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:o:mediatek:nr17r:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | MediaTek |
| cpe:2.3:h:mediatek:mt6813:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6835t:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6878m:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
- cpe:2.3:o:mediatek:nr17:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:o:mediatek:nr17r:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·MediaTek
- cpe:2.3:h:mediatek:mt6813:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6835t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6878m:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt8863:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
| cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:* | not specified by NVD | Running on | MediaTek |
- cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt8863:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
- cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MediaTek
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-20704
- 2026-10-03 Alias added: GHSA-ccx6-mqj7-mfjp
References
More MediaTek Nr17 vulnerabilities
- TI-2024-13114 Memory corruption in MediaTek MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855… CVSS 3.1CRITICAL 9.8
- TI-2023-16125 Out-of-bounds write in MediaTek MT2735, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6789… CVSS 3.1CRITICAL 9.8
- TI-2024-13099 Out-of-bounds write in MediaTek MT6813, MT6815, MT6835, MT6878, MT6897, MT6899, MT6986… CVSS 3.1CRITICAL 9.8
- TI-2025-14796 Out-of-bounds write in MediaTek MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M… CVSS 3.1HIGH 8.1
- TI-2025-14706 Out-of-bounds write in MediaTek MT2737, MT6813, MT6835, MT6835T, MT6878, MT6878M, MT6879… CVSS 3.1CRITICAL 9.8
- TI-2023-07238 Out-of-bounds write in MediaTek MT2731, MT6570, MT6580, MT6595, MT6732, MT6735, MT6737… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-20704 · CVE Program
- CVE-2025-20704 · NVD
- FIRST EPSS
- GHSA-ccx6-mqj7-mfjp · 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