PT-2021-3088 · Microsoft · Sharepoint Server+1

Published 2021-02-08 · Updated 2025-07-21 · CVE-2021-28474

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft SharePoint Server (affected versions not specified)

Description The vulnerability in Microsoft SharePoint Server is related to insufficient input sanitization, allowing a remote attacker to execute arbitrary code. In a network-based attack, an authenticated attacker can gain access to create a site and could execute code remotely within the SharePoint Server.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Command Injection

Weakness Enumeration

CWE-77

CWE-436

Related Identifiers

BDU:2021-02711

CVE-2021-28474

ZDI-21-574

Affected Products

Sharepoint Server

Sharepoint Foundation

References · 16

• https://zerodayinitiative.com/advisories/ZDI-21-574 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28474 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28474 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-28474 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28474 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-28474 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02711 · Security Note
• https://t.me/ptswarm/52 · Telegram Post
• https://t.me/aptreports/20582 · Telegram Post
• https://t.me/sysadm_in_channel/3201 · Telegram Post
• https://t.me/aptreports/20580 · Telegram Post
• https://t.me/cvenotify/14399 · Telegram Post
• https://t.me/cybersecuritytechnologies/3800 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021051111 · Note
• https://t.me/malwr/5245 · Telegram Post