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URL: https://nvd.nist.gov/vuln/detail/CVE-2021-42237

⇱ NVD - CVE-2021-42237

  1. Vulnerabilities

CVE-2021-42237 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html CVE, MITRE Third Party Advisory  VDB Entry 
http://sitecore.com CVE, MITRE Vendor Advisory 
https://blog.assetnote.io/2021/11/02/sitecore-rce/ CVE, MITRE Exploit  Third Party Advisory 
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 CVE, MITRE Vendor Advisory 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237 CISA-ADP US Government Resource 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
Sitecore XP Remote Command Execution Vulnerability 03/25/2022 04/15/2022 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-502 Deserialization of Untrusted Data 👁 cwe source acceptance level
NIST   CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

13 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 12:09:30 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2025-02-03T14:09:16.771279Z","id":"CVE-2021-42237","options":[{"exploitation":"active"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by MITRE 6/17/2026 12:09:30 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

Modified Analysis by NIST 11/10/2025 9:43:39 AM

Action Type Old Value New Value
Added Reference Type 
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237 Types: US Government Resource

CVE Modified by CISA-ADP 10/21/2025 8:17:46 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237

CVE Modified by CISA-ADP 10/21/2025 4:18:48 PM

Action Type Old Value New Value
Removed Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237

CVE Modified by CISA-ADP 10/21/2025 3:19:23 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237

Modified Analysis by NIST 4/03/2025 3:15:55 PM

Action Type Old Value New Value

CVE Modified by CISA-ADP 2/03/2025 11:15:31 AM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CWE 
CWE-502

CVE Modified by CVE 11/21/2024 1:27:26 AM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html
Added Reference 
http://sitecore.com
Added Reference 
https://blog.assetnote.io/2021/11/02/sitecore-rce/
Added Reference 
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776

CVE Modified by MITRE 5/14/2024 5:30:16 AM

Action Type Old Value New Value

Modified Analysis by NIST 12/03/2021 4:17:16 PM

Action Type Old Value New Value
Changed Reference Type 
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html No Types Assigned


 
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html Third Party Advisory, VDB Entry

CVE Modified by MITRE 11/16/2021 1:15:07 PM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html [No Types Assigned]

Initial Analysis by NIST 11/09/2021 11:44:37 AM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CVSS V2 
NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Added CWE 
NIST CWE-502
Added CPE Configuration 
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:*:*:*:*:*:*
Changed Reference Type 
http://sitecore.com No Types Assigned


 
http://sitecore.com Vendor Advisory
Changed Reference Type 
https://blog.assetnote.io/2021/11/02/sitecore-rce/ No Types Assigned


 
https://blog.assetnote.io/2021/11/02/sitecore-rce/ Exploit, Third Party Advisory
Changed Reference Type 
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 No Types Assigned


 
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776 Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-42237
NVD Published Date:
11/05/2021
NVD Last Modified:
06/17/2026
Source:
MITRE