Review reviewHigh

CVE-2026-49169

Microsoft Windows Server 2025, Windows Server 2025 (Server Core installation), windows server 2025

Use after free in DNS Server allows an authorized attacker to execute code over a network.

CVSS
8.8
EPSS
0.51%
40.6% percentile
CISA KEV
Not listed
Published
2026.07.15
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.51%
Technical severityCVSS 8.8

Vulnerability overview

Use after free in DNS Server allows an authorized attacker to execute code over a network.

Affected product and versions

Product
Microsoft Windows Server 2025, Windows Server 2025 (Server Core installation), windows server 2025
Affected versions
>= 10.0.26100.0 < 10.0.26100.33158, < 10.0.26100.33158
Fixed versions
10.0.26100.33158

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft Windows Server 2025, Windows Server 2025 (Server Core installation), windows server 2025 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-416