CVE-2026-20502
highIn vdec, there is a possible out of bounds write due to a missing bounds check.
Vendor / product: Mediatek — mt2718 firmware
In 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 execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9196.
CVSS
8.4
8.4 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-09-07 02:17
Modified: 2026-09-09 02:55
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
mediatek / mt2718_firmware all versions
mediatek / mt6580_firmware all versions
mediatek / mt6739_firmware all versions
mediatek / mt6761_firmware all versions
mediatek / mt6765_firmware all versions
mediatek / mt6768_firmware all versions
mediatek / mt6769_firmware all versions
mediatek / mt6779_firmware all versions
mediatek / mt6781_firmware all versions
mediatek / mt6785_firmware all versions
mediatek / mt6789_firmware all versions
mediatek / mt6833_firmware all versions
mediatek / mt6835_firmware all versions
mediatek / mt6853_firmware all versions
mediatek / mt6855_firmware all versions
mediatek / mt6858_firmware all versions
mediatek / mt6873_firmware all versions
mediatek / mt6877_firmware all versions
mediatek / mt6878_firmware all versions
mediatek / mt6879_firmware all versions
mediatek / mt6881_firmware all versions
mediatek / mt6883_firmware all versions
mediatek / mt6885_firmware all versions
mediatek / mt6886_firmware all versions
mediatek / mt6889_firmware all versions
mediatek / mt6893_firmware all versions
mediatek / mt6895_firmware all versions
mediatek / mt6897_firmware all versions
mediatek / mt6899_firmware all versions
mediatek / mt6983_firmware all versions
mediatek / mt6985_firmware all versions
mediatek / mt6989_firmware all versions
mediatek / mt6991_firmware all versions
mediatek / mt6993_firmware all versions
mediatek / mt8126_firmware all versions
mediatek / mt8171_firmware all versions
mediatek / mt8186_firmware all versions
mediatek / mt8188_firmware all versions
mediatek / mt8189_firmware all versions
mediatek / mt8195_firmware all versions
mediatek / mt8196_firmware all versions
mediatek / mt8367_firmware all versions
mediatek / mt8391_firmware all versions
mediatek / mt8395_firmware all versions
mediatek / mt8668_firmware all versions
mediatek / mt8676_firmware all versions
mediatek / mt8678_firmware all versions
mediatek / mt8696_firmware all versions
mediatek / mt8781_firmware all versions
mediatek / mt8788e_firmware all versions
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.mediatek.com/product-security-bulletin/September-2026
References
- https://www.mediatek.com/product-security-bulletin/September-2026 security@mediatek.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗