CVE-2021-42237 KEV
9.8
CRITICAL · CVSS 3.1 · EPSS 97.6% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2022-04-15.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 97.57% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | yes — remediate by 2022-04-15 |
| Public exploit | none known |
| Published | 2021-11-05 |
| Last modified | 2026-07-09 |
CISA KEV
| Name | Sitecore XP Remote Command Execution Vulnerability |
|---|---|
| Added | 2022-03-25 |
| Due | 2022-04-15 |
| Vendor / product | Sitecore / XP |
| Ransomware use | known |
Affected (1)
| Vendor | Product |
|---|---|
| sitecore | experience platform |
References
- http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html
- https://blog.assetnote.io/2021/11/02/sitecore-rce/
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776
- http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.html
- https://blog.assetnote.io/2021/11/02/sitecore-rce/
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237
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