CVE-2023-30691

Local privilege escalation via parcel mismatch

Published Aug 10, 2023 · Updated Oct 10, 2024

Improper input validation in AuthenticationConfig on Samsung Mobile Devices before SMR Aug-2023 Release 1 allows local users to escalate privileges. Unused AuthenticationConfig code processes Android Parcel data inconsistently, creating a mismatch that defeats the intended privilege boundary. Exploitation requires local execution on an affected Android 11, 12, or 13 device and grants permissions beyond the attacker's existing level.

CVSS severity7.8
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in AuthenticationConfig on Samsung Mobile Devices before SMR Aug-2023 Release 1 allows local users to escalate privileges. Unused AuthenticationConfig code processes Android Parcel data inconsistently, creating a mismatch that defeats the intended privilege boundary. Exploitation requires local execution on an affected Android 11, 12, or 13 device and grants permissions beyond the attacker's existing level.

The record

CVE
CVE-2023-30691
Published
Aug 10, 2023
Updated
Oct 10, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-266, T1404
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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=SMR_Aug_2023_Release_1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=SMR_Aug_2023_Release_1

Published CVSS scores

8.4Samsung MobileCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-266Incorrect Privilege Assignment
T1404Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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