Review reviewHigh

CVE-2026-45648

Microsoft Windows Server 2022, Windows Server 2025, Windows Server 2025 (Server Core installation)

Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

CVSS
8.8
EPSS
1.12%
63.1% percentile
CISA KEV
Not listed
Published
2026.06.10
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.12%
Technical severityCVSS 8.8

Vulnerability overview

Stack-based buffer overflow in Active Directory Domain Services allows an authorized attacker to execute code over a network.

Affected product and versions

Product
Microsoft Windows Server 2022, Windows Server 2025, Windows Server 2025 (Server Core installation)
Affected versions
>= 10.0.20348.0 < 10.0.20348.5256, >= 10.0.26100.0 < 10.0.26100.32995, < 10.0.20348.5256, < 10.0.26100.32995
Fixed versions
10.0.20348.5256, 10.0.26100.32995

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft Windows Server 2022, Windows Server 2025, Windows Server 2025 (Server Core installation) and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-121
CVE-2026-45648 — Microsoft Windows Server 2022, Windows Server 2025, Windows Server 2025 (Server Core installation) | SECUFOCUS NOW