CVE-2021-39144
CVSS v3
8.5
HIGH
EPSS Score
94.4 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
CISA Known Exploited Vulnerability
- Date Added
- 2023-03-10
- Patch Due Date
- 2023-03-31
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-08-23
Frequently asked questions
What is CVE-2021-39144?
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Is CVE-2021-39144 actively exploited?
Yes. CVE-2021-39144 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-03-31.
What is the CVSS score for CVE-2021-39144?
CVE-2021-39144 has a CVSS v3 base score of 8.5 (HIGH severity).
Is CVE-2021-39144 affecting your environment?
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