# CVE-2019-17571: liblog4j1.2-java: Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be ex...

CVE-2019-17571 is fixed in liblog4j1.2-java on 1 platform by liblog4j1.2-java 1.2.17-8+deb10u1build0.18.04.1 (version 1.2.17-8+deb10u1build0.18.04.1), released December 20, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-17571
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.6998
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 20, 2019

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | liblog4j1.2-java Ubuntu 18.04.6 LTS (bionic) | 1.2.17-8+deb10u1build0.18.04.1 | [liblog4j1.2-java 1.2.17-8+deb10u1build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-liblog4j1.2-java-1.2.17-8-deb10u1build0.18.04.1.md) | Dec 20, 2019 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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