CVE-2021-24073
MEDIUMCVSS 6.5/10EPSS 1.62%
Last modified
CVE-2021-24073 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Skype for Business and Lync Spoofing Vulnerability. EPSS estimates a 1.62% chance of exploitation in the next 30 days.
Description
Skype for Business and Lync Spoofing Vulnerability
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | Lync Server | 2013 | — |
| Microsoft | Skype For Business Server | 2015 | Cu8 |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24073Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24073Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-24073?
Skype for Business and Lync Spoofing Vulnerability
How severe is CVE-2021-24073?
CVE-2021-24073 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.62% probability of exploitation in the next 30 days.
How do I fix CVE-2021-24073?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-24068Microsoft Excel Remote Code Execution Vulnerability7.8
- CVE-2021-24069Microsoft Excel Remote Code Execution Vulnerability7.8
- CVE-2021-2407Vulnerability in the PeopleSoft Enterprise PeopleTools produ…5.3
- CVE-2021-24070Microsoft Excel Remote Code Execution Vulnerability7.8
- CVE-2021-24071Microsoft SharePoint Information Disclosure Vulnerability5.3
- CVE-2021-24072Microsoft SharePoint Server Remote Code Execution Vulnerabil…8.8
- CVE-2021-24074Windows TCP/IP Remote Code Execution Vulnerability9.8
- CVE-2021-24075Microsoft Windows VMSwitch Denial of Service Vulnerability6.8
- CVE-2021-24076Microsoft Windows VMSwitch Information Disclosure Vulnerabil…5.5
- CVE-2021-24077Windows Fax Service Remote Code Execution Vulnerability9.8
- CVE-2021-24078Windows DNS Server Remote Code Execution Vulnerability9.8
- CVE-2021-24079Windows Backup Engine Information Disclosure Vulnerability5.5
Are you affected by CVE-2021-24073?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST