# CVE-2026-96020

Authenticated out-of-bounds write in Microsoft DNS Server allows remote code execution.

- Page: https://www.vulneraibility.com/cve/CVE-2026-96020
- CVSS: 8.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.74% (percentile 54.9)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-10)
- Weakness: CWE-787
- Published: 2026-11-10

## Affected versions

- Microsoft Windows Server 2016: affected >= 10.0.14393.0 and < 10.0.14393.9688
- Microsoft Windows Server 2016 (Server Core installation): affected >= 10.0.14393.0 and < 10.0.14393.9688
- Microsoft Windows Server 2019: affected >= 10.0.17763.0 and < 10.0.17763.9487
- Microsoft Windows Server 2019 (Server Core installation): affected >= 10.0.17763.0 and < 10.0.17763.9487
- Microsoft Windows Server 2022: affected >= 10.0.20348.0 and < 10.0.20348.5870
- 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

Authenticated attacker can trigger OOB write in DNS service to achieve remote code execution over the network, potentially compromising domain/DNS infrastructure.

## Action

Immediate action required

## Recommendation

Apply Microsoft's security update immediately; restrict DNS admin access and monitor DNS servers.

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96020

---
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.