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.
- 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
- CWE-203Observable DiscrepancyBase
- 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
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 2012 (Server Core installation)6.2.9200.0 to < 6.2.9200.26434x64-based Systems
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to < 6.3.9600.23470x64-based Systems
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to < 10.0.14393.9612x64-based Systems
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to < 10.0.17763.9376x64-based Systems
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to < 10.0.26100.33650x64-based Systems
06 References
- msrc.microsoft.comActive Directory Federation Services (AD FS) Information Disclosure Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97788