CVE-2026-20526
Received Received - Intake

Out-of-Bounds Write in Modem Firmware

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: MediaTek, Inc.

Description
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: MOLY01898195; Issue ID: MSV-8906.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-05
Last Modified
2026-10-05
Generated
2026-10-05
AI Q&A
2026-10-05
EPSS Evaluated
N/A
NVD
CVE-2026-20526
EUVD
EUVD-2026-92201

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mediatek modem *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is in the Modem component where a missing bounds check can lead to an out of bounds write. This may allow remote escalation of privilege if a user equipment connects to a malicious base station controlled by an attacker. User interaction is required for exploitation.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain elevated privileges on your device remotely. This might lead to unauthorized access or control of your device, especially if you connect to a compromised network or rogue base station.

Compliance Impact

The vulnerability involves a possible out of bounds write due to missing bounds check in Modem, potentially leading to remote privilege escalation. This could impact compliance with standards like GDPR or HIPAA by enabling unauthorized access or data breaches if exploited via a rogue base station. User interaction is required for exploitation, reducing but not eliminating risk.

Mitigation Strategies

Apply the patch identified as MOLY01898195 to address the missing bounds check in the Modem component.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20526. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart