CVE-2021-39144
critical-risk
Published 2021-08-23
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.
Do I need to act?
!
94.3% 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
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.5/10
High
NETWORK
/ HIGH complexity
Affected Products (20)
Affected Vendors
References (25)
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210923-0003/
Third Party Advisory
https://www.debian.org/security/2021/dsa-5004
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210923-0003/
Third Party Advisory
https://www.debian.org/security/2021/dsa-5004
and 5 more references
75
/ 100
critical-risk
Severity
25/34 · High
Exploitability
27/34 · High
Exposure
23/34 · High