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CVE-2023-21111

20
FAUCET Score

CVE-2023-21111 is a local denial-of-service vulnerability in Android versions 11 through 13, stemming from improper input validation in PhoneAccountRegistrar.java. This flaw could prevent users from accessing emergency services. Rated Medium severity (CVSS 5.5), it requires no user interaction or additional privileges for exploitation. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
11.0CPE matchmatch criteria
cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*
12.1CPE matchmatch criteria
cpe:2.3:o:google:android:12.1:*:*:*:*:*:*:*
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
0.09%
Probability of exploitation in next 30 days
EPSS Percentile
0.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0009 is in the 3rd 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/2023-05-01
PatchVendor Advisory