# MediaTek Mt6986d vulnerabilities

Source: https://junglewise.ai/threats/technologies/mt6986d  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/mt6986d.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in MediaTek Mt6986d: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-20528, was published on 5 October 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 5 (0 critical, 0 exploited in the wild)

## About MediaTek Mt6986d

MediaTek mt6986d modem chipset for mobile network connectivity.

## Latest MediaTek Mt6986d vulnerabilities

- [CVE-2026-20528: MediaTek ccci out-of-bounds write due to missing bounds check](https://junglewise.ai/threats/cve-2026-20528-in-ccci-there-is-a-possible-out-of-bounds-write-and-read-due-to-a) (medium, CVSS 6.7, published 5 Oct 2026)
- [CVE-2026-20490: MediaTek CCCI out-of-bounds read](https://junglewise.ai/threats/cve-2026-20490-mediatek-ccci-out-of-bounds-read) (medium, CVSS 4.4, published 3 Aug 2026)
- [CVE-2026-20449: In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service…](https://junglewise.ai/threats/cve-2026-20449-in-modem-there-is-a-possible-system-crash-due-to-a-heap-buffer) (medium, CVSS 6.5, published 4 May 2026)
- [CVE-2025-20747: In gnss service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local…](https://junglewise.ai/threats/cve-2025-20747-in-gnss-service-there-is-a-possible-out-of-bounds-write-due-to-an) (medium, CVSS 6.7, published 4 Nov 2025)
- [CVE-2025-20746: In gnss service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local…](https://junglewise.ai/threats/cve-2025-20746-in-gnss-service-there-is-a-possible-out-of-bounds-write-due-to-an) (medium, CVSS 6.7, published 4 Nov 2025)

## Most severe MediaTek Mt6986d vulnerabilities

- [CVE-2026-20528: MediaTek ccci out-of-bounds write due to missing bounds check](https://junglewise.ai/threats/cve-2026-20528-in-ccci-there-is-a-possible-out-of-bounds-write-and-read-due-to-a) (medium, CVSS 6.7, published 5 Oct 2026)
- [CVE-2025-20747: In gnss service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local…](https://junglewise.ai/threats/cve-2025-20747-in-gnss-service-there-is-a-possible-out-of-bounds-write-due-to-an) (medium, CVSS 6.7, published 4 Nov 2025)
- [CVE-2025-20746: In gnss service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local…](https://junglewise.ai/threats/cve-2025-20746-in-gnss-service-there-is-a-possible-out-of-bounds-write-due-to-an) (medium, CVSS 6.7, published 4 Nov 2025)
- [CVE-2026-20449: In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service…](https://junglewise.ai/threats/cve-2026-20449-in-modem-there-is-a-possible-system-crash-due-to-a-heap-buffer) (medium, CVSS 6.5, published 4 May 2026)
- [CVE-2026-20490: MediaTek CCCI out-of-bounds read](https://junglewise.ai/threats/cve-2026-20490-mediatek-ccci-out-of-bounds-read) (medium, CVSS 4.4, published 3 Aug 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 1 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other MediaTek technologies

- [MediaTek MT6890](https://junglewise.ai/threats/technologies/mt6890): 43 vulnerabilities
- [MediaTek MT6991](https://junglewise.ai/threats/technologies/mt6991): 41 vulnerabilities
- [MediaTek Modem](https://junglewise.ai/threats/technologies/modem): 31 vulnerabilities
- [MediaTek MT6877](https://junglewise.ai/threats/technologies/mt6877): 31 vulnerabilities
- [MediaTek MT6835](https://junglewise.ai/threats/technologies/mt6835): 30 vulnerabilities
- [MediaTek MT6878](https://junglewise.ai/threats/technologies/mt6878): 30 vulnerabilities
- [MediaTek MT6833](https://junglewise.ai/threats/technologies/mt6833): 29 vulnerabilities
- [MediaTek MT6853](https://junglewise.ai/threats/technologies/mt6853): 29 vulnerabilities
- [MediaTek MT6893](https://junglewise.ai/threats/technologies/mt6893): 29 vulnerabilities
- [MediaTek MT6899](https://junglewise.ai/threats/technologies/mt6899): 29 vulnerabilities
- [MediaTek MT8678](https://junglewise.ai/threats/technologies/mt8678): 29 vulnerabilities
- [MediaTek MT2735](https://junglewise.ai/threats/technologies/mt2735): 28 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "MediaTek Mt6986d vulnerabilities", https://junglewise.ai/threats/technologies/mt6986d, 9 November 2026.