CVE-2023-21340

Call-state disclosure via missing permission check

Published Oct 30, 2023 · Updated Sep 6, 2024

Information disclosure in Google Android 14 Telecomm allows local users to read device call state without user interaction. An unspecified Telecomm call-state path returns whether calls are idle, ringing, or off-hook without enforcing the required phone-state permission. A low-privileged local app is sufficient, and the exposed data is limited to call status rather than call contents or device modification.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Google Android 14 Telecomm allows local users to read device call state without user interaction. An unspecified Telecomm call-state path returns whether calls are idle, ringing, or off-hook without enforcing the required phone-state permission. A low-privileged local app is sufficient, and the exposed data is limited to call status rather than call contents or device modification.

The record

CVE
CVE-2023-21340
Published
Oct 30, 2023
Updated
Sep 6, 2024
Vendor
Google
Product
Android
Classifications
CWE-862
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google · Androidversion=14

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo