CVE-2026-49169Important
Windows DNS Server Remote Code Execution Vulnerability
Assessment
Use after free in DNS Server allows an authorized attacker to execute code over a network.
- Severity
- Important
- CVSS base score
- 8.0CVSS:3.1/
AV:N/ AC:H/ PR:H/ UI:N/ S:C/ C:H/ I:H/ A:H/ E:U/ RL:O/ RC:C - Impact
- Remote Code Execution
- EPSS, next 30 days
- 0.8%Higher than 53.2% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
- Exploitability
- Exploitation Less Likely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Role: DNS Server
- Weakness
- CWE-416: Use After Free
- Issued by
- Microsoft
- Published
- 14 Jul 2026 · July 2026
- Last revised
- 14 Jul 2026
Updates that fix it
1 KB| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5099536 | Security Update | Required | Windows Server 2025, Windows Server 2025 (Server Core installation) | All CVEs in KB5099536 |
Affected products
Windows2 affected products
- Windows Server 2025
- Windows Server 2025 (Server Core installation)