CVE-2023-21035

In multiple functions of BackupHelper.java, there is a possible way for an app to get permissions...

7.8 HighFix available

In multiple functions of BackupHelper.java, there is a possible way for an app to get permissions previously granted to another app with the same package name due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-184847040

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.11%Up 0.1 points since Mar 25, 2023

What each source reports

NVD Score used 7.8

Record: CVE-2023-21035
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-863
Updated: 2026-11-02

CVE List 7.8

Record: CVE-2023-21035
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-863
Updated: 2026-11-02

EUVDEUVD-2023-25203 7.8

Record: EUVD-2023-25203
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-52qh-2823-96fv 7.8

In multiple functions of BackupHelper.java, there is a possible way for an app to get permissions...

Record: GHSA-52qh-2823-96fv
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-863
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-21035 7.8

Record: UBUNTU-CVE-2023-21035
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVPUB-A-184847040 No score

Record: PUB-A-184847040
Updated: 2026-11-05

Affected products

google android

Affected packages

Affected packages
Package	Affected	Fixed
`platform/packages/modules/Permission` Android	13:0 up to 13:2023-03-01, plus listed versions 13	13:2023-03-01
`android-framework-23` Ubuntu:18.04:LTS	All versions, plus listed versions 6.0.1+r72-36.0.1+r72-46.0.1+r72-5~18.04	None known
`android-framework-23` Ubuntu:20.04:LTS	All versions, plus listed versions 6.0.1+r72-5	None known
`android-framework-23` Ubuntu:22.04:LTS	All versions, plus listed versions 6.0.1+r72-6	None known
`android-framework-23` Ubuntu:24.04:LTS	All versions, plus listed versions 6.0.1+r72-66.0.1+r72-6ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-21035 is a high vulnerability (CVSS 7.8) in Google Android, published March 1, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. Fixed in platform/packages/modules/Permission 13:2023-03-01.