6.5

CVE-2026-66303

Skype for Business and Lync Denial of Service Vulnerability

Null pointer dereference in Skype for Business allows an authorized 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
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.79% 0.541
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66303
Patch
Vendor Advisory