CVE-2021-38366

Public Exploit

Description

Sitecore through 10.1, when Update Center is enabled, allows remote authenticated users to upload arbitrary files and achieve remote code execution by visiting an uploaded .aspx file at an admin/Packages URL.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.79% Top 15%
Third-Party Advisory istern.dk
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://blog.istern.dk/2021/08/10/sitecore-10-authenticated-file-upload-to-rce/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-38366?
CVE-2021-38366 has been scored as a high severity vulnerability.
How to fix CVE-2021-38366?
To fix CVE-2021-38366, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38366 being actively exploited in the wild?
It is possible that CVE-2021-38366 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.