VulnerabilityAwaiting Analysis

CVE-2026-69641

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

CRITICAL 9.1EPSS 0.85%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

CVSS 3.1: 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.85% probability · 56th percentile
CISA KEV: Not listed
Weakness: CWE-862
Source: secure@microsoft.com

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69641

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.