Vulnerability · Published May 11, 2021 · Assigned by microsoft
CVE-2021-28478Microsoft SharePoint Server Spoofing Vulnerability
High 7.6
In plain English
A high-severity authentication bypass by spoofing in Microsoft SharePoint Enterprise Server 2016 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities).
Severity (CVSS 3.1)7.6High
Exploit odds (30 days)1.6%top 24.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Microsoft SharePoint Server Spoofing Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 – before 16.0.5161.1000 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 – before 16.0.10374.20000 |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | 15.0.0 – before 15.0.5345.1000 |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C