CVE-2023-30921

Local messaging-data disclosure via missing permission check

Published Jul 12, 2023 · Updated Dec 4, 2024

Missing authorization in Unisoc messaging service on affected Android 10 through 13 chipsets allows local users to disclose messaging data. The vendor identifies only the messaging service and states that it omits a required permission check; no function, API, or accessed data is public. A local user needs no additional execution privileges, and the published consequence is limited to information disclosure.

CVSS severity5.5
Medium
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Unisoc messaging service on affected Android 10 through 13 chipsets allows local users to disclose messaging data. The vendor identifies only the messaging service and states that it omits a required permission check; no function, API, or accessed data is public. A local user needs no additional execution privileges, and the published consequence is limited to information disclosure.

The record

CVE
CVE-2023-30921
Published
Jul 12, 2023
Updated
Dec 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, CWE-200, T1409
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.3UnisocCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

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
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1409Stored Application Data

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

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Your stack

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