VulnerabilityUndergoing Analysis

CVE-2026-69463

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code over a network.

CRITICAL 9.8EPSS 0.93%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code over a network.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.93% probability · 59th percentile
CISA KEV: Not listed
Weakness: CWE-122
Source: secure@microsoft.com

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69463

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.