<p>A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server.</p> <p>The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current user. The attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user.</p> <p>The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests.</p>
Published 2020-10-16 23:15:16
Updated 2023-12-31 20:15:56
View at NVD,   CVE.org
Vulnerability category: Cross site scripting (XSS)

Exploit prediction scoring system (EPSS) score for CVE-2020-16945

0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 27 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-16945

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
3.5
LOW AV:N/AC:M/Au:S/C:N/I:P/A:N
6.8
2.9
NIST
5.4
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
2.3
2.7
NIST
8.7
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
2.3
5.8
Microsoft Corporation

CWE ids for CVE-2020-16945

References for CVE-2020-16945

Products affected by CVE-2020-16945

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