CVE-2023-42734

Local information disclosure via missing permission check

Published Dec 4, 2023 · Updated Aug 2, 2024

Missing authorization in telephony service in Unisoc Android 11, Android 12, and Android 13 allows local users to read sensitive information. The telephony service omits a required permission check, allowing an unprivileged local application to access data intended for authorized callers. Exploitation requires local application execution but no additional privileges or user interaction, and the documented impact is confidentiality loss without integrity or availability effects.

CVSS severity6.2
Medium
EPSS probability0.10%
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 telephony service in Unisoc Android 11, Android 12, and Android 13 allows local users to read sensitive information. The telephony service omits a required permission check, allowing an unprivileged local application to access data intended for authorized callers. Exploitation requires local application execution but no additional privileges or user interaction, and the documented impact is confidentiality loss without integrity or availability effects.

The record

CVE
CVE-2023-42734
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, CWE-200
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.2NVDCVSS:3.1/AV:L/AC:L/PR:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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