March 10, 2023 · Applied Cybernetics Group
CVE-2021-39144 — XStream XStream
XStream Remote Code Execution Vulnerability
- Added to KEV
2023-03-10- Federal due date
2023-03-31- Vendor
- XStream
- Product
- XStream
- EPSS
- 99.9th percentile (score 0.943, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-39144
CISA short description
XStream contains a remote code execution vulnerability that allows an attacker to manipulate the processed input stream and replace or inject objects that result in the execution of a local command on the server. This vulnerability can affect multiple products, including but not limited to VMware Cloud Foundation.
Required action
Apply updates per vendor instructions.