7.5

CVE-2026-66307

Skype for Business and Lync Denial of Service Vulnerability

Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Skype For Business Server Version 2015 Update cumulative_update_13
Microsoft ≫ Skype For Business Server Version 2015 Update cumulative_update_13_hotfix_2
Microsoft ≫ Skype For Business Server Version 2019 Update cumulative_update_8
Microsoft ≫ Skype For Business Server Version 2019 Update cumulative_update_8_hotfix1
Microsoft ≫ Skype For Business Server Version 2019 Update cumulative_update_8_hotfix2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.65% 0.488
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-191 Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66307
Patch
Vendor Advisory