Risk Letters

Exploited vulnerability

CVE-2021-39144

TLP:CLEAR

XStream Remote Code Execution Vulnerability

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.

Facts

  • Vendor: XStream
  • Product: XStream
  • CVSS: 8.5
  • EPSS (probability of exploitation within 30 days): 98.1 %
  • On CISA's Known Exploited Vulnerabilities list since: 10 March 2023
  • First known exploitation: 10 March 2023
  • CISA's deadline for US federal agencies: 31 March 2023
  • Weakness: CWE-94
  • First seen by Risk Letters: 10 March 2023

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD