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CVE-2023-21091

20
FAUCET Score

CVE-2023-21091 is a medium-severity vulnerability affecting Android 13, stemming from a missing permission check in the AppLocalePickerActivity.java component. This flaw allows an attacker to cause a local denial of service across user boundaries without requiring user interaction or elevated privileges. While the CVSS score is 5.5, indicating a moderate risk, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
13.0CPE matchmatch criteria
cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.08%
Probability of exploitation in next 30 days
EPSS Percentile
0.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0008 is in the 2nd percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

googlepatch availablevia nvd_reference
View patch

References

source.android.com / security/bulletin/2023-04-01
PatchVendor Advisory