// For flags

CVE-2021-24099

Skype for Business and Lync Denial of Service Vulnerability

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Skype for Business and Lync Denial of Service Vulnerability

Una Vulnerabilidad de Denegación de Servicio de Skype para Business y Lync

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-13 CVE Reserved
  • 2021-02-25 CVE Published
  • 2023-05-20 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
 Lync Server
Search vendor "Microsoft" for product "Lync Server"
 2013
Search vendor "Microsoft" for product "Lync Server" and version "2013"
-
Affected
Microsoft
Search vendor "Microsoft"
 Skype For Business Server
Search vendor "Microsoft" for product "Skype For Business Server"
 2015
Search vendor "Microsoft" for product "Skype For Business Server" and version "2015"
cu8
Affected
Microsoft
Search vendor "Microsoft"
 Skype For Business Server
Search vendor "Microsoft" for product "Skype For Business Server"
 2019
Search vendor "Microsoft" for product "Skype For Business Server" and version "2019"
cu2
Affected