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01 Record

CVE-2026-97788

Active Directory Federation Services (AD FS) Information Disclosure Vulnerability

HighPUBLISHEDCNA: microsoft
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

02 Description

Active Directory Federation Services (AD FS) Information Disclosure Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.87% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 58.7% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-16.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-13 19:01Z15 DAYS AGO
Last updated
2026-10-28 18:21Z16 HR AGO
Reserved
2026-09-25
Assigning CNA
microsoft
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Weaknesses
Data version
5.2
Document digest
9fbbb8f59b79436617d2cb2475a623dfc863a4896a3021940ca0c72a5ea6afa2

05 Affected products

VendorProductVersionsPlatforms
MicrosoftMicrosoft .NET Framework 3.53.5.0 to < 2.0.50727.9188 AND 3.0.30729.9171Windows 11 version 26H1, Windows Server 2012, Windows Server 2012 R2
MicrosoftMicrosoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.23.0.0.0 to < 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0Windows 10 version 1607, Windows Server 2016, Windows Server 2019
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.24.7.0 to < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0Windows 10 version 1809
MicrosoftMicrosoft .NET Framework 3.5 AND 4.84.8.0 to < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0Windows 10 version 1809, Windows 10 version 21H2, Windows 10 version 22H2, Windows Server 2019, Windows Server 2022
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8.14.8.1 to < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0Windows 10 version 21H2, Windows 10 version 22H2, Windows 11 version 23H2, Windows 11 version 24H2, Windows 11 version 25H2, Windows 11 version 26H2, Windows Server 2022, Windows Server 2025
MicrosoftMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.24.7.0 to < 4.7.4150.0Windows Server 2012, Windows Server 2012 R2
MicrosoftMicrosoft .NET Framework 4.84.8.0 to < 4.8.4811.0Windows 10 version 1607, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
MicrosoftMicrosoft .NET Framework 4.8.14.8.0.0 to < 4.8.9363.0Windows 11 version 26H1
MicrosoftWindows 10 Version 160710.0.14393.0 to < 10.0.14393.961232-bit Systems, x64-based Systems
MicrosoftWindows 10 Version 180910.0.17763.0 to < 10.0.17763.937632-bit Systems, x64-based Systems
MicrosoftWindows 10 Version 21H210.0.19044.0 to < 10.0.19044.780732-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftWindows 10 Version 22H210.0.19045.0 to < 10.0.19045.780732-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftWindows 11 version 23H210.0.22631.0 to < 10.0.22631.7652ARM64-based Systems, x64-based Systems
MicrosoftWindows 11 Version 24H210.0.26100.0 to < 10.0.26100.9711ARM64-based Systems, x64-based Systems
MicrosoftWindows 11 Version 25H210.0.26200.0 to < 10.0.26200.9711ARM64-based Systems, x64-based Systems
MicrosoftWindows 11 version 26H110.0.28000.0 to < 10.0.28000.3231ARM64-based Systems, x64-based Systems
MicrosoftWindows 11 Version 26H210.0.26300.0 to < 10.0.26300.9711ARM64-based Systems, x64-based Systems
MicrosoftWindows Server 20126.2.9200.0 to < 6.2.9200.26434x64-based Systems
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 to < 6.2.9200.26434x64-based Systems
MicrosoftWindows Server 2012 R26.3.9600.0 to < 6.3.9600.23470x64-based Systems
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to < 6.3.9600.23470x64-based Systems
MicrosoftWindows Server 201610.0.14393.0 to < 10.0.14393.9612x64-based Systems
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to < 10.0.14393.9612x64-based Systems
MicrosoftWindows Server 201910.0.17763.0 to < 10.0.17763.9376x64-based Systems
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to < 10.0.17763.9376x64-based Systems
MicrosoftWindows Server 202210.0.20348.0 to < 10.0.20348.5761x64-based Systems
MicrosoftWindows Server 202510.0.26100.0 to < 10.0.26100.33650x64-based Systems
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to < 10.0.26100.33650x64-based Systems

06 References