CVE-2021-42237

critical-risk
Published 2021-11-05

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.

Do I need to act?

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94.4% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Sitecore

References (9)

Third Party Advisory http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remo...
Vendor Advisory http://sitecore.com
Exploit https://blog.assetnote.io/2021/11/02/sitecore-rce/
Vendor Advisory https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776
Third Party Advisory http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remo...
Vendor Advisory http://sitecore.com
Exploit https://blog.assetnote.io/2021/11/02/sitecore-rce/
Vendor Advisory https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
80
/ 100
critical-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 21/34 · High