6.5

CVE-2021-42321

Warnung
Exploit

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Exchange Server Version 2016 Update cumulative_update_21
Microsoft ≫ Exchange Server Version 2016 Update cumulative_update_22
Microsoft ≫ Exchange Server Version 2019 Update cumulative_update_10
Microsoft ≫ Exchange Server Version 2019 Update cumulative_update_11

17.11.2021: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Exchange Server Remote Code Execution Vulnerability

Schwachstelle

An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.

Beschreibung

Apply updates per vendor instructions.

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 91.74% 0.998
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.5 8 6.4
AV:N/AC:L/Au:S/C:P/I:P/A:P
NIST 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Microsoft 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42321
Patch
Vendor Advisory
http://packetstormsecurity.com/files/166153/Microsoft-Exchange-Server-Remote-Code-Execution.html
Third Party Advisory
Exploit
VDB Entry
http://packetstormsecurity.com/files/168131/Microsoft-Exchange-Server-ChainedSerializationBinder-Remote-Code-Execution.html
Third Party Advisory
Exploit
VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42321
Patch
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42321
US Government Resource