Vulnerability in Microsoft .Net Framework 3.5
CVE-2026-97788
Observable discrepancy in Active Directory Federation Services (AD FS) allows an unauthorized attacker to disclose information over a network.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Microsoft .Net Framework 3.5
- Microsoft .Net Framework 3.5 And 4.6.2/4.7/4.7.1/4.7.2
- Microsoft .Net Framework 3.5 And 4.7.2
- Microsoft .Net Framework 3.5 And 4.8
- Microsoft .Net Framework 3.5 And 4.8.1
- Microsoft .Net Framework 4.6.2/4.7/4.7.1/4.7.2
- Microsoft .Net Framework 4.8
- Microsoft .Net Framework 4.8.1
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
Weakness classification (CWE)
References
- Active Directory Federation Services (AD FS) Information Disclosure Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-97788?
- CVE-2026-97788 is a high-severity vulnerability in Microsoft .Net Framework 3.5, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2026-10-13.
- How severe is CVE-2026-97788?
- High severity. CVSS v3 base score is 7.5 out of 10.