Out-of-bounds Read in Apple macOS
CVE-2026-26127
Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.
Vulnerability class: Buffer Overflow
EPSS: 0.020 (79.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apple Macos
- Linux Linux_kernel
- Microsoft Bcl.memory
- Microsoft Microsoft.bcl.memory — versions 10.0.0, 9.0.0
- Microsoft .Net
- Microsoft .Net 10.0 — versions 10.0.0
- Microsoft .Net 9.0 — versions 9.0.0
- Microsoft Windows
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-26127?
- CVE-2026-26127 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-03-10.
- How severe is CVE-2026-26127?
- High severity. CVSS v3 base score is 7.5 out of 10.