CVE-2023-40386: Apple macOS · An app may be able to access Notes attachments
Affects Apple macOSSource CVE Database V5
Not known to be exploited : upgrade to 14 when convenient.
Data as of 26 Oct 2026, 06:26 UTC
Rated Medium by the CNA (apple) · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 14
Exploitation evidence
Disclosed: evidence found.
CVE published 26 Sep 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Upgrade apple/macos to 14.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Appleapple/macospkg:deb/apple/macosOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
The vulnerability is fixed in macOS Sonoma 14. Users and administrators should update to macOS 14 or later to remediate this issue. No additional mitigation steps are indicated or required beyond applying the official update.
Description
CVE-2023-40386 is a privacy vulnerability in Apple macOS where an app may be able to access Notes attachments due to insufficient handling of temporary files. This issue has been fixed in macOS Sonoma 14.