CVE-2026-58834

Persistent boot loop via unvalidated permission grant state

Published Oct 5, 2026 · Updated Oct 5, 2026

Denial of service in Google Android 14 through 17 allows attackers controlling a work-profile policy app to trigger a persistent boot loop. DevicePolicyManagerService.setPermissionGrantState accepts an out-of-range grantState and saves it; reapplying that state throws an uncaught exception during system_server startup. Exploitation requires control of a profile owner, device owner, or permission-grant delegate, and the resulting device can require a factory reset.

CVSS severityUnavailable
Unscored
EPSS probability0.06%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Google Android 14 through 17 allows attackers controlling a work-profile policy app to trigger a persistent boot loop. DevicePolicyManagerService.setPermissionGrantState accepts an out-of-range grantState and saves it; reapplying that state throws an uncaught exception during system_server startup. Exploitation requires control of a profile owner, device owner, or permission-grant delegate, and the resulting device can require a factory reset.

The record

CVE
CVE-2026-58834
Published
Oct 5, 2026
Updated
Oct 5, 2026
Vendor
WebM Project
Product
Android
Classifications
T1642
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 5, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=14
  2. Affected versionversion=15
  3. Affected versionversion=16
  4. Affected versionversion=16-qpr2
  5. Affected versionversion=17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

WebM Project · Androidversion=14; version=15; version=16; version=16-qpr2; version=17

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1642Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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