CVE-2026-85873CWE-639

CVE-2026-85873

Medium · published October 13, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
56.9
In the wild
Unconfirmed
What it is

Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00823 · 56.9th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-13T23:21Z
References (1)
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:01Z
    Skype for Business Elevation of Privilege Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Skype for Business Elevation of Privilege Vulnerability
    cvelistv5