CVE-2026-70079

HIGH

Published Oct 13, 2026 Modified Oct 16, 2026 CWE-841

Description

Improper enforcement of behavioral workflow in Windows DNS allows an unauthorized attacker to deny service over a network.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0127

Probability of exploitation

0.70%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-841 CWE-841

Affected Products

Vendor	Product	Versions
microsoft	windows_10_1607	< 10.0.14393.9612
microsoft	windows_10_1607	< 10.0.14393.9612
microsoft	windows_10_1809	< 10.0.17763.9376
microsoft	windows_10_1809	< 10.0.17763.9376
microsoft	windows_server_2012	All
microsoft	windows_server_2012	All
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

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70079

Frequently Asked Questions

What is CVE-2026-70079? +

Improper enforcement of behavioral workflow in Windows DNS allows an unauthorized attacker to deny service over a network. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-70079? +

CVE-2026-70079 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0127, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-70079? +

CVE-2026-70079 affects products from microsoft, specifically: windows_10_1607, windows_10_1809, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2025. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-70079? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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