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VulnerabilityPublished Updated

CVE-2023-42886: Apple macOS · A user may be able to cause unexpected app termination or arbitrary code execution

Affects Apple macOSSource CVE Database V5

0

Not known to be exploited : upgrade to 14.2 soon.

Data as of 26 Oct 2026, 14:05 UTC

Severity
High

Rated High by the CNA (apple) · No CVSS score from NVD or the CNA

EPSS
0.3% 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 14.2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Dec 2023

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 26 Oct 2026.

What to do

Upgrade apple/macos to 14.2.

Affected software

ProductAffectedFixed in
Appleapple/macospkg:rpm/apple/macosOther threatsAffected
  • <14.2
Fixed in
  • 14.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Apply the official Apple security updates macOS Sonoma 14.2, macOS Ventura 13.6.3, or macOS Monterey 12.7.2 to remediate this vulnerability. These updates include improved bounds checking that addresses the out-of-bounds read issue.

Description

CVE-2023-42886 is a vulnerability in Apple macOS where an out-of-bounds read could allow a user to cause unexpected application termination or potentially execute arbitrary code. The issue has been addressed with improved bounds checking and is fixed in macOS Sonoma 14.2, macOS Ventura 13.6.3, and macOS Monterey 12.7.2.

References

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