CVE-2023-27953
CWE-787Published: May 8, 2023· Updated: Jun 17, 2026
Official Description
The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.3, macOS Monterey 12.6.4, macOS Big Sur 11.7.5. A remote user may be able to cause unexpected system termination or corrupt kernel memory.
Risk Analysis
macOS contains a memory handling vulnerability that allows a remote attacker to cause system crashes or corrupt kernel memory. The critical severity reflects the potential for severe system-level impact.
No public exploit is known, and the vulnerability is not listed in the CISA KEV catalog.
Apply the latest macOS updates, specifically Ventura 13.3, Monterey 12.6.4, or Big Sur 11.7.5.
Technical Analysis
CVE-2023-27953 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (7)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-27953 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts