Vulnerability in Microsoft Lync Server
CVE-2021-24099
Skype for Business and Lync Denial of Service Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Microsoft Lync Server — versions 2013
- Microsoft Lync Server 2013 — versions 0
- Microsoft Skype For Business Server — versions 2015, 2019
- Microsoft Skype For Business Server 2015 Cu 8 — versions 2015 CU 8
- Microsoft Skype For Business Server 2019 Cu2 — versions 7.0.0
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24099 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-24099?
- CVE-2021-24099 is a medium-severity vulnerability in Microsoft Lync Server. CVSS score: 6.5/10. Published 2021-02-25.
- How severe is CVE-2021-24099?
- Medium severity. CVSS v3 base score is 6.5 out of 10.