CVE-2023-40383

Sensitive-data access via improper path validation

Published Jan 10, 2024 · Updated Jun 17, 2025

Path traversal in libc in Apple macOS Ventura before 13.3 allows local users to access sensitive user data through a malicious app. Apple identifies improper path handling in libc but has not published the affected routine or the exact validation error applied to untrusted paths. Exploitation requires a user to run an app locally, and the documented consequence is limited to reading user-sensitive data.

CVSS severity3.3
Low
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in libc in Apple macOS Ventura before 13.3 allows local users to access sensitive user data through a malicious app. Apple identifies improper path handling in libc but has not published the affected routine or the exact validation error applied to untrusted paths. Exploitation requires a user to run an app locally, and the documented consequence is limited to reading user-sensitive data.

The record

CVE
CVE-2023-40383
Published
Jan 10, 2024
Updated
Jun 17, 2025
Vendor
Apple
Product
macOS
Classifications
CWE-22, T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2025Record 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=unspecified <13.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · macOSversion=unspecified <13.3

Published CVSS scores

3.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
3.3NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

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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