← Vulnerability feed

Vulnerability record · CVE-2026-20501 · published 7 September 2026

CVE-2026-20501: Mediatek mt2718 firmware heap-based buffer overflow vulnerability

Mediatek · Mt2718 Firmware

In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.

8.4 CVSS 3.1 High EPSS 0.13% · top 97.8% CWE-122 · Heap-based buffer overflow
8.4CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
53Affected product versions listed by NVD
1References
9 Sep 2026Last modified by NVD

Description

In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

53 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.mediatek.com/product-security-bulletin/September-2026 Vendor Advisory

Track CVE-2026-20501 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.4CVE-2026-20502Mediatek mt2718 firmware heap-based buffer overflow vulnerabilityIn vdec, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional e…EPSS 0.13%7.8CVE-2026-20455Mediatek mt6739 firmware out-of-bounds write vulnerabilityIn geniezone, 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 …EPSS 0.11%7.7CVE-2026-20483Mediatek mt8893 firmware missing authorization vulnerabilityIn Telephony, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege with no…EPSS 0.17%6.7CVE-2026-20486Mediatek mt8910 firmware vulnerabilityIn imgsensor, there is a possible application crash due to incorrect error handling. This could lead to local escalation of privilege if a malicious …EPSS 0.17%6.7CVE-2026-20453Mediatek mt8673 firmware out-of-bounds write vulnerabilityIn geniezone, 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 …EPSS 0.11%6.7CVE-2026-20451Mediatek mt8115 firmware type confusion vulnerabilityIn slbc, there is a possible out of bounds write due to type confusion. This could lead to local escalation of privilege if a malicious actor has alr…EPSS 0.15%6.7CVE-2026-20448Mediatek mt6765 firmware vulnerabilityIn geniezone, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege if a ma…EPSS 0.15%6.5CVE-2026-20449Mediatek mt6763 firmware classic buffer overflow vulnerabilityIn Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rog…EPSS 0.22%

Source: NIST National Vulnerability Database (record CVE-2026-20501), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.