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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...

Basic Information

CVE State
PUBLISHED
Reserved Date
October 11, 2021
Published Date
November 05, 2021
Last Updated
February 03, 2025
Vendor
n/a
Product
n/a
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.
Tags
cisa malware ransomware nuclei_scanner metasploit_scanner

CVSS Scores

CVSS v3.1

9.8 - CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0

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

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2022-03-25 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2022-01-16 05:22:30 UTC) Source
Used in Malware
Yes (added 2022-03-25 00:00:00 UTC) Source

References

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

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-25 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sitecore_xp_cve_2021_42237.rb 2025-04-29 11:01:39 UTC
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-42237.yaml 2025-04-26 00:00:00 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

sitecore_xp_cve_2021_42237

Type: metasploit • Created: Unknown

Metasploit module for CVE-2021-42237

ItsIgnacioPortal/CVE-2021-42237

Type: github • Created: 2022-01-16 05:22:30 UTC • Stars: 12

An exploit/PoC for CVE-2021-42237

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Proof of Concept Exploit Available

  • Exploit Used in Malware

  • Added to KEVIntel

  • Detected by Nuclei

  • Detected by Metasploit