CVE-2021-42237
Sitecore XP Remote Command Execution Vulnerability
MITRE ATT&CK techniques
How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.
| Technique | Name | Relationship |
|---|---|---|
| T1059 | Command and Scripting Interpreter | primary impact |
Summary
Sitcore XP contains an insecure deserialization vulnerability which can allow for remote code execution.
Affected software
Vendor: Sitecore · Product: XP
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Sitecore
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2019-9874 | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 83.9% | Yes |
| CVE-2025-53690 | Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability | 30.8% | Yes |
| CVE-2019-9875 | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 14.2% | Yes |
Is your domain exposed?
Run a free, instant security report for any domain — exposure score, email auth, TLS and breach metadata.
Get your free reportAll information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.