CVE-2022-39856

Local call-information disclosure via missing access control

Published Oct 7, 2022 · Updated Aug 3, 2024

Improper access control in Samsung Mobile Devices imsservice before SMR Oct-2022 Release 1 allows local attackers to access call information. The imsservice application lacked proper access-control logic on an Android S(12) device, allowing an untrusted local application to reach call-information data without the intended authorization. Exploitation requires local code execution on the handset; the disclosed impact is confidentiality of call information, with no reported integrity or availability effect.

CVSS severity3.3
Low
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Samsung Mobile Devices imsservice before SMR Oct-2022 Release 1 allows local attackers to access call information. The imsservice application lacked proper access-control logic on an Android S(12) device, allowing an untrusted local application to reach call-information data without the intended authorization. Exploitation requires local code execution on the handset; the disclosed impact is confidentiality of call information, with no reported integrity or availability effect.

The record

CVE
CVE-2022-39856
Published
Oct 7, 2022
Updated
Aug 3, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-862, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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

  1. Affected versionversion=S(12) <SMR Oct-2022 Release 1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=S(12) <SMR Oct-2022 Release 1

Published CVSS scores

4.0Samsung Mobile SecurityCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1203Exploitation for Client Execution

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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