VulnerabilityAnalyzed
CVE-2026-58529
Out-of-bounds read in Active Directory Federation Services (AD FS) allows an authorized attacker to disclose information over a network.
HIGH 7.1EPSS 1.04%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Out-of-bounds read in Active Directory Federation Services (AD FS) allows an authorized attacker to disclose information over a network.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
- EPSS
- 1.04% probability · 62th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- microsoft/windows 11 26h1
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58529Vendor Advisory, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.