CVE-2026-69378CWE-674

CVE-2026-69378

High · published September 8, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
67.3
In the wild
Unconfirmed
What it is

Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01174 · 67.3th percentile
Weakness
CWE-674 · Uncontrolled Recursion
Published
2026-09-08T22:18Z
Affected products (4)
ProductVersionsFixed in
microsoft/exchange_serverall versions—
microsoft/exchange_serverall versions—
microsoft/exchange_serverall versions—
microsoft/exchange_server_subscription_edition< 15.02.2562.04915.02.2562.049
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69378 · [email protected]
EPSS history
Timeline
  • 10 SEP 03:17Z
    EPSS moved — → 1%
    epss
  • 08 SEP 17:12Z
    Microsoft Exchange Server Denial of Service Vulnerability
    cvelistv5