CVE-2023-30739

Local code execution via unchecked file descriptor

Published Nov 7, 2023 · Updated Sep 4, 2024

Arbitrary file-descriptor write in Samsung Mobile Devices before SMR Nov-2023 Release 1 allows local users to execute arbitrary code. The libsec-ril component writes through an attacker-selected file descriptor because a required check is absent; Samsung has not disclosed the responsible function or input path. Exploitation requires local access and high privileges, and successful abuse executes attacker-controlled code on the device.

CVSS severity6.7
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file-descriptor write in Samsung Mobile Devices before SMR Nov-2023 Release 1 allows local users to execute arbitrary code. The libsec-ril component writes through an attacker-selected file descriptor because a required check is absent; Samsung has not disclosed the responsible function or input path. Exploitation requires local access and high privileges, and successful abuse executes attacker-controlled code on the device.

The record

CVE
CVE-2023-30739
Published
Nov 7, 2023
Updated
Sep 4, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-20, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

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

Published CVSS scores

6.7Samsung MobileCVSS:3.1/AV:L/AC:L/PR:H/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1404Exploitation for Privilege Escalation

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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