CVE-2026-56879
Analyzed Analyzed - Analysis Complete

Memory Corruption in GMC MBA via gmc_mb_msg_handler

Publication date: 2026-09-15

Last updated on: 2026-09-21

Assigner: Google Devices

Description
In gmc_mb_msg_handler of gmc_mba.c, there is a possible memory corruption due to a confused deputy. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-15
Last Modified
2026-09-21
Generated
2026-10-06
AI Q&A
2026-09-16
EPSS Evaluated
2026-10-04
NVD
CVE-2026-56879
EUVD
EUVD-2026-78955

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
google android *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-441 The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability involves a memory corruption issue in the gmc_mb_msg_handler function of gmc_mba.c. It occurs due to a confused deputy scenario, which can lead to local privilege escalation. Exploitation requires system execution privileges but no user interaction.

Impact Analysis

An attacker with system execution privileges could exploit this to corrupt memory, potentially gaining higher privileges or executing arbitrary code on the affected system. This could lead to unauthorized access or control over the system.

Compliance Impact

The vulnerability allows local privilege escalation with system execution privileges required. This could potentially lead to unauthorized access or data breaches, which may impact compliance with standards like GDPR or HIPAA if sensitive data is involved. However, specific compliance impacts depend on system configuration and data handling practices.

Mitigation Strategies

Apply the latest security patches or updates provided by the vendor for the affected gmc_mb_msg_handler component in gmc_mba.c. Monitor official advisories from the vendor for any additional mitigation guidance.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-56879. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart