CVE-2026-20549 - Vulnerability Details - OpenCVE

ReportizFlow

In Modem, there is a possible out of bounds write due to improper input validation. 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 not needed for exploitation. Patch ID: MOLY01775865; Issue ID: MSV-8895.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Mediatek	Mediatek Chipset
Mediatek, Inc.	Mediatek Chipset

No data.

No data.

References

Link	Providers
https://www.mediatek.com/product-security-bulletin/November-2026

History

Mon, 02 Nov 2026 11:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mediatek Mediatek mediatek Chipset Mediatek, Inc. Mediatek, Inc. mediatek Chipset
Vendors & Products		Mediatek Mediatek mediatek Chipset Mediatek, Inc. Mediatek, Inc. mediatek Chipset

Mon, 02 Nov 2026 04:15:00 +0000

Type	Values Removed	Values Added
Title		Out‑of‑Bounds Write in MediaTek Modem Enables Remote Privilege Escalation

Mon, 02 Nov 2026 02:45:00 +0000

Type	Values Removed	Values Added
Description		In Modem, there is a possible out of bounds write due to improper input validation. 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 not needed for exploitation. Patch ID: MOLY01775865; Issue ID: MSV-8895.
Weaknesses		CWE-787
References		https://www.mediatek.com/product-security-bulletin/November-2026

MITRE

Status: PUBLISHED

Assigner: MediaTek

Published: 2026-11-02T02:33:06.759Z

Updated: 2026-11-02T02:33:06.759Z

Reserved: 2025-11-03T01:30:59.041Z

Link: CVE-2026-20549

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-11-02T03:17:31.780

Modified: 2026-11-02T03:17:31.780

Link: CVE-2026-20549

Redhat

No data.

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