CVE-2023-30666

Local memory corruption via unchecked preconfiguration input

Published Jul 6, 2023 · Updated Oct 29, 2024

Out-of-bounds write in libsec-ril in Samsung Mobile Devices before SMR Jul-2023 Release 1 allows local users to corrupt memory. DoOemImeiSetPreconfig fails to validate an input before an ensuing write exceeds the destination buffer. Low-privileged local access to an affected Android 11, 12, or 13 device is required; Samsung reports memory corruption without a further consequence.

CVSS severity5.3
Medium
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

Out-of-bounds write in libsec-ril in Samsung Mobile Devices before SMR Jul-2023 Release 1 allows local users to corrupt memory. DoOemImeiSetPreconfig fails to validate an input before an ensuing write exceeds the destination buffer. Low-privileged local access to an affected Android 11, 12, or 13 device is required; Samsung reports memory corruption without a further consequence.

The record

CVE
CVE-2023-30666
Published
Jul 6, 2023
Updated
Oct 29, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 29, 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile DevicesAffected versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.3Samsung MobileCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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