CVE-2021-24099 | BDVDB-2026-149683 Detail

MicrosoftSkype for Business Server 2019 CU2

Description#

Skype for Business and Lync Denial of Service Vulnerability

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

No weakness recorded in the source data.

No public exploit known

6.5 Medium

3.2%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 88.2.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Not classified

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

6.5 Medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).