CVE-2026-70330
MEDIUMCVSS 6.7/10
Last modified
CVE-2026-70330 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally..
Description
Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1607 | >= 10.0.14393.0, < 10.0.14393.9418 |
| Microsoft | Windows 10 Version 1809 | >= 10.0.17763.0, < 10.0.17763.9115 |
| Microsoft | Windows 10 Version 21H2 | >= 10.0.19044.0, < 10.0.19044.7663 |
| Microsoft | Windows 10 Version 22H2 | >= 10.0.19045.0, < 10.0.19045.7663 |
| Microsoft | Windows 11 version 23H2 | >= 10.0.22631.0, < 10.0.22631.7517 |
| Microsoft | Windows 11 Version 23H2 | >= 10.0.22631.0, < 10.0.22631.7517 |
| Microsoft | Windows 11 Version 24H2 | >= 10.0.26100.0, < 10.0.26100.9168 |
| Microsoft | Windows 11 Version 25H2 | >= 10.0.26200.0, < 10.0.26200.9168 |
| Microsoft | Windows 11 version 26H1 | >= 10.0.28000.0, < 10.0.28000.2704 |
| Microsoft | Windows Server 2012 | >= 6.2.9200.0, < 6.2.9200.26280 |
| Microsoft | Windows Server 2012 (Server Core installation) | >= 6.2.9200.0, < 6.2.9200.26280 |
| Microsoft | Windows Server 2012 R2 | >= 6.3.9600.0, < 6.3.9600.23338 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | >= 6.3.9600.0, < 6.3.9600.23338 |
| Microsoft | Windows Server 2016 | >= 10.0.14393.0, < 10.0.14393.9418 |
| Microsoft | Windows Server 2016 (Server Core installation) | >= 10.0.14393.0, < 10.0.14393.9418 |
| Microsoft | Windows Server 2019 | >= 10.0.17763.0, < 10.0.17763.9115 |
| Microsoft | Windows Server 2019 (Server Core installation) | >= 10.0.17763.0, < 10.0.17763.9115 |
| Microsoft | Windows Server 2022 | >= 10.0.20348.0, < 10.0.20348.5499 |
| Microsoft | Windows Server 2025 | >= 10.0.26100.0, < 10.0.26100.33296 |
| Microsoft | Windows Server 2025 (Server Core installation) | >= 10.0.26100.0, < 10.0.26100.33296 |
References
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
Frequently Asked Questions
What is CVE-2026-70330?
Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-70330?
CVE-2026-70330 has a CVSS score of 6.7/10 (MEDIUM severity).
How do I fix CVE-2026-70330?
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-2026-70325Improper input validation in Microsoft Office PowerPoint all…5.5
- CVE-2026-70326Server-side request forgery (ssrf) in Microsoft Office Share…8.8
- CVE-2026-70327Out-of-bounds read in Microsoft Office Excel allows an unaut…6.5
- CVE-2026-70328Out-of-bounds read in Microsoft Office Excel allows an unaut…6.5
- CVE-2026-70329Integer overflow or wraparound in Microsoft Office Outlook a…8.8
- CVE-2026-7033A vulnerability has been found in Tenda F456 1.0.0.5. Affect…8.8
- CVE-2026-70332Improper neutralization of input during web page generation …9.6
- CVE-2026-70335Improper neutralization of special elements used in an os co…7.8
- CVE-2026-70336Improper control of generation of code ('code injection') in…8.8
- CVE-2026-70337Relative path traversal in Microsoft PowerShell Core allows …8.8
- CVE-2026-70338Improper control of generation of code ('code injection') in…7.8
- CVE-2026-70339Access of resource using incompatible type ('type confusion'…5.4
Are you affected by CVE-2026-70330?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST