Vulnerability · Published May 11, 2021 · Assigned by microsoft
CVE-2021-26421Skype for Business and Lync Spoofing Vulnerability
Medium 6.5
In plain English
A medium-severity security flaw in Microsoft Lync Server 2013 CU10 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)1.4%top 27.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Skype for Business and Lync Spoofing Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Skype for Business Server 2015 CU11 | 2015 CU11 – before 2046.369 |
| Microsoft | Microsoft Lync Server 2013 CU10 | 8308.0 – before 8308.1144 |