CVE-2025-48535

Local privilege escalation via mismatched Intent deserialization

Published Sep 4, 2025 · Updated Feb 26, 2026

Unsafe deserialization in Android System Settings 13 through 16 allows local users to gain elevated privileges through a crafted Intent. assertSafeToStartCustomActivity resolved the supplied Intent before copying it, allowing mismatched parcel deserialization to make the validated and launched contents differ. Exploitation requires local app-level access but no user interaction and can launch an otherwise unauthorized activity.

CVSS severity7.8
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in Android System Settings 13 through 16 allows local users to gain elevated privileges through a crafted Intent. assertSafeToStartCustomActivity resolved the supplied Intent before copying it, allowing mismatched parcel deserialization to make the validated and launched contents differ. Exploitation requires local app-level access but no user interaction and can launch an otherwise unauthorized activity.

The record

CVE
CVE-2025-48535
Published
Sep 4, 2025
Updated
Feb 26, 2026
Vendor
Google Cloud
Product
Android
Classifications
CWE-502, T1404
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=13
  2. Affected versionversion=14
  3. Affected versionversion=15
  4. Affected versionversion=16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=13; version=14; version=15; version=16

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1404Exploitation for Privilege Escalation

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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