CVE-2026-66306CWE-209

CVE-2026-66306

Medium · published September 8, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
60.0
In the wild
Unconfirmed
What it is

Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00922 · 60.0th percentile
Weakness
CWE-209 · Generation of Error Message Containing Sensitive Information
Published
2026-09-08T23:18Z
Affected products (6)
ProductVersionsFixed in
microsoft/skype_for_business_serverall versions—
microsoft/skype_for_business_serverall versions—
microsoft/skype_for_business_serverall versions—
microsoft/skype_for_business_serverall versions—
microsoft/skype_for_business_serverall versions—
microsoft/skype_for_business_server_subscription_editionall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66306 · [email protected]
EPSS history
Timeline
  • 10 SEP 03:17Z
    EPSS moved — → 1%
    epss
  • 08 SEP 18:30Z
    Skype for Business Information Disclosure Vulnerability
    cvelistv5