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
Not known to be exploited : upgrade to 14.2 soon.
Data as of 26 Oct 2026, 14:05 UTC
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
Disclosed: evidence found.
CVE published 12 Dec 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 26 Oct 2026.
What to do
Upgrade apple/macos to 14.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Appleapple/macospkg:rpm/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
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
- support.apple.com/en-us/HT214038 (opens in a new tab)
- support.apple.com/en-us/HT214037 (opens in a new tab)
- support.apple.com/en-us/HT214036 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Dec/9 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Dec/10 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Dec/11 (opens in a new tab)
- support.apple.com/kb/HT214038 (opens in a new tab)
- support.apple.com/kb/HT214037 (opens in a new tab)
- support.apple.com/kb/HT214036 (opens in a new tab)