CVE-2021-42237

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-42237
Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0 /10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html Third Party Advisory VDB Entry
http://sitecore.com Vendor Advisory
https://blog.assetnote.io/2021/11/02/sitecore-rce/ Exploit Third Party Advisory
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 Vendor Advisory
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html Third Party Advisory VDB Entry
http://sitecore.com Vendor Advisory
https://blog.assetnote.io/2021/11/02/sitecore-rce/ Exploit Third Party Advisory
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:sitecore:experience_platform:7.5:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:7.5:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:7.5:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:sp1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update3:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update4:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update5:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update6:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update7:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:update3:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update3:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update4:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update5:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update6:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update7:*:*:*:*:*:*
History

22 Oct 2025, 00:17

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237 -

21 Oct 2025, 20:18

Type Values Removed Values Added
References
  • {'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237', 'source': '134c704f-9b21-4f2e-91b3-4a467353bcc0'}

21 Oct 2025, 19:19

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237 -

21 Nov 2024, 06:27

Type Values Removed Values Added
References () http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html - Third Party Advisory, VDB Entry () http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html - Third Party Advisory, VDB Entry
References () http://sitecore.com - Vendor Advisory () http://sitecore.com - Vendor Advisory
References () https://blog.assetnote.io/2021/11/02/sitecore-rce/ - Exploit, Third Party Advisory () https://blog.assetnote.io/2021/11/02/sitecore-rce/ - Exploit, Third Party Advisory
References () https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 - Vendor Advisory () https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 - Vendor Advisory

03 Dec 2021, 21:17

Type Values Removed Values Added
References (MISC) http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html - (MISC) http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html - Third Party Advisory, VDB Entry

16 Nov 2021, 18:15

Type Values Removed Values Added
References
  • (MISC) http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html -

09 Nov 2021, 16:44

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 10.0
v3 : 9.8
CWE CWE-502
CPE cpe:2.3:a:sitecore:experience_platform:8.2:update5:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update5:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:7.5:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update6:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update6:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update7:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:7.5:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:7.5:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update4:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:update1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update2:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update4:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:-:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:update3:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.1:update3:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update7:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.0:sp1:*:*:*:*:*:*
cpe:2.3:a:sitecore:experience_platform:8.2:update3:*:*:*:*:*:*
References (MISC) https://blog.assetnote.io/2021/11/02/sitecore-rce/ - (MISC) https://blog.assetnote.io/2021/11/02/sitecore-rce/ - Exploit, Third Party Advisory
References (MISC) http://sitecore.com - (MISC) http://sitecore.com - Vendor Advisory
References (MISC) https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 - (MISC) https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 - Vendor Advisory

05 Nov 2021, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-11-05 10:15

Updated : 2025-10-22 00:17

NVD link : CVE-2021-42237

Mitre link : CVE-2021-42237

CVE.ORG link : CVE-2021-42237

JSON object : View

Products Affected

sitecore

  • experience_platform
CWE
CWE-502

Deserialization of Untrusted Data