CVE-2021-42237: Sitecore XP Remote Command Execution Vulnerability
CVE-2021-42237 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-03-25
Sitecore XP is vulnerable to an insecure deserialization attack that allows for unauthenticated remote command execution. The vulnerability exists in the handling of untrusted data, requiring no special configuration to exploit.
Yes. CVE-2021-42237 is known to be exploited in the wild, first recorded on 25 March 2022. Treat it as urgent.
How severe is CVE-2021-42237?
Critical severity, with a CVSS score of 9.8, published 25 March 2022.
Which products and versions are affected?
Sitecore Experience Platform (XP) 7.5 Initial Release to 8.2 Update-7.
Is there a fix for CVE-2021-42237?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2021-42237 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2021-42237?
Check whether you run Sitecore XP. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Sitecore Experience Platform (XP) 7.5 Initial Release to 8.2 Update-7
Timeline
2021-11-02: disclosed: Public disclosure by Assetnote
2022-03-25: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2022-03-25: exploited: Reported as exploited in the wild