CVE-2026-83647
HIGHCVSS 7.5/10EPSS 1.30%
Last modified
CVE-2026-83647 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.. EPSS estimates a 1.30% chance of exploitation in the next 30 days.
Description
Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.9612 |
| Microsoft | Windows 10 1809 | < 10.0.17763.9376 |
| Microsoft | Windows 10 21h2 | < 10.0.19044.7807 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.7807 |
| Microsoft | Windows 11 23h2 | < 10.0.22631.7652 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.9711 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.9711 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.3231 |
| Microsoft | Windows 11 26h2 | < 10.0.26300.9711 |
| Microsoft | Windows Server 2012 | r2 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9612 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9376 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5761 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33650 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-83647?
Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.
How severe is CVE-2026-83647?
CVE-2026-83647 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-83647?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-83641Heap-based buffer overflow in Windows Media allows an author…7.8
- CVE-2026-83642Access of resource using incompatible type ('type confusion'…8.8
- CVE-2026-83643Stack-based buffer overflow in Windows Error Reporting allow…8.8
- CVE-2026-83644Use after free in Windows Audio Service allows an authorized…7
- CVE-2026-83645Allocation of resources without limits or throttling in Acti…7.5
- CVE-2026-83646Url redirection to untrusted site ('open redirect') in Activ…5.4
- CVE-2026-83648Null pointer dereference in Active Directory Domain Services…6.5
- CVE-2026-83649Out-of-bounds read in Windows Local Security Authority Subsy…6.5
- CVE-2026-8365The Blocksy theme for WordPress is vulnerable to PHP Object …8.8
- CVE-2026-83650Heap-based buffer overflow in Windows Media allows an author…7.8
- CVE-2026-83651Out-of-bounds read in Windows GDI allows an unauthorized att…7.5
- CVE-2026-83652Heap-based buffer overflow in Windows NTFS allows an authori…7.8
Are you affected by CVE-2026-83647?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST