What is CVE-2026-47288?

CVE-2026-47288 is a high-severity vulnerability in Microsoft Windows_server_2012, classified under Integer Overflow or Wraparound. CVSS score: 7.1/10. Published 2026-06-09.

How severe is CVE-2026-47288?

High severity. CVSS v3 base score is 7.1 out of 10.

Integer overflow in Microsoft Windows_server_2012

CVE-2026-47288

Integer overflow or wraparound in Windows Kerberos allows an authorized attacker to execute code over an adjacent network.

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows_server_2012 — versions r2
Microsoft Windows_server_2016
Microsoft Windows_server_2019
Microsoft Windows_server_2022
Microsoft Windows_server_2025

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

secure@microsoft.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-47288?: CVE-2026-47288 is a high-severity vulnerability in Microsoft Windows_server_2012, classified under Integer Overflow or Wraparound. CVSS score: 7.1/10. Published 2026-06-09.
How severe is CVE-2026-47288?: High severity. CVSS v3 base score is 7.1 out of 10.