# CVE-2026-96177

Unauthenticated RCE in Microsoft DNS Server (use-after-free).

- Page: https://www.vulneraibility.com/cve/CVE-2026-96177
- CVSS: 8.1
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.58% (percentile 48.0)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-10)
- Weakness: CWE-416
- Published: 2026-11-10

## Affected versions

- Microsoft Windows Server 2025: affected >= 10.0.26100.0 and < 10.0.26100.33822
- Microsoft Windows Server 2025 (Server Core installation): affected >= 10.0.26100.0 and < 10.0.26100.33822

A version outside these ranges is not a statement that it is unaffected.

## Impact

Network-accessible use-after-free allows unauthenticated remote arbitrary code execution on affected DNS servers, risking full server compromise and service disruption.

## Action

Immediate action required

## Recommendation

Install Microsoft's security update immediately and restrict DNS server access until patched.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96177

---
Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.