CVE-2023-29756Public exploit

Persistent denial of service via SharedPreferences injection

Published Jun 9, 2023 · Updated Jan 6, 2025

Denial of service in Twilight 13.3 for Android allows unauthorized apps to persistently crash the app through an exposed content provider. The com.urbandroid.sleep.multiprocesspreferences.PREFFERENCE_AUTHORITY provider accepts repeated large key-value inserts into SharedPreferences until startup loading exhausts memory. Another app must run on the same device and trigger the inserts; the persisted oversized data then causes crashes after later Twilight startups.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Twilight 13.3 for Android allows unauthorized apps to persistently crash the app through an exposed content provider. The com.urbandroid.sleep.multiprocesspreferences.PREFFERENCE_AUTHORITY provider accepts repeated large key-value inserts into SharedPreferences until startup loading exhausts memory. Another app must run on the same device and trigger the inserts; the persisted oversized data then causes crashes after later Twilight startups.

The record

CVE
CVE-2023-29756
Published
Jun 9, 2023
Updated
Jan 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-346, T1642
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-346Origin Validation Error
T1642Endpoint Denial of Service

Public exploit references

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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