CVE-2021-33779
Windows AD FS Security Feature Bypass Vulnerability
HIGH
8.1
CVSS Score
Published: July 14, 2021 at 05:53 PM UTC
Updated: August 10, 2026 at 04:17 PM UTC
4 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2004
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Severity
HIGH8.1
Exploit prediction
EPSS 2%
Description
Windows AD FS Security Feature Bypass Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.0.0 ≤ v < 10.0.19041.111010.0.0
Affected range stops below 10.0.19041.1110, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.14393.4530, so it looks safe — our inference, not a vendor statement
10.0.17763.0 ≤ v < 10.0.17763.206110.0.17763.0
Affected range stops below 10.0.17763.2061, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.19042.111010.0.0
Affected range stops below 10.0.19042.1110, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33779Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33779CVSS
8.1HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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