CVE-2026-56879

Local privilege escalation via confused-deputy memory corruption

Published Sep 15, 2026 · Updated Sep 15, 2026

Memory corruption in the Android kernel allows local users with System execution privileges to escalate privileges without user interaction. Google identifies gmc_mb_msg_handler in gmc_mba.c as the confused-deputy locus that corrupts memory but does not disclose the faulty operation. Exploitation requires local access with System execution privileges; successful exploitation raises privileges beyond that context.

CVSS severityUnavailable
Unscored
EPSS probability0.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the Android kernel allows local users with System execution privileges to escalate privileges without user interaction. Google identifies gmc_mb_msg_handler in gmc_mba.c as the confused-deputy locus that corrupts memory but does not disclose the faulty operation. Exploitation requires local access with System execution privileges; successful exploitation raises privileges beyond that context.

The record

CVE
CVE-2026-56879
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Google
Product
Android
Classifications
T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=Android kernel

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google · Androidversion=Android kernel

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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