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Servers and applications

CVE-2019-17571

Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.

Severity
Critical 9.8
Published
20 Dec 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
70% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Apache Log4jServers and applications · cpe:a:apache:log4j
  • Every version up to 1.2.17
Oracle WebLogic ServerServers and applications · cpe:a:oracle:weblogic_server
  • Version 10.3.6.0.0
  • Version 12.1.3.0.0
  • Version 12.2.1.3.0
  • Version 12.2.1.4.0
  • Version 14.1.1.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-17571
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-17571