---
title: "CVE-2017-5645: Apache Log4j vulnerability | CubePath"
description: "In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application…"
language: en
source: https://cubepath.com/security/cve/CVE-2017-5645
---

# CVE-2017-5645: Apache Log4j vulnerability | CubePath

## Description

In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2017-5645)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.89358 (89.4% probability)

Percentile

99.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Oct 8, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Automatable

yes

Technical impact

total

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apache Log4j

  - affected: All versions between 2.0-alpha1 and 2.8.1

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [RHSA-2017:2888](https://access.redhat.com/errata/RHSA-2017:2888)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2809](https://access.redhat.com/errata/RHSA-2017:2809)  (access.redhat.com) vendor-advisory
- [97702](http://www.securityfocus.com/bid/97702)  (securityfocus.com) vdb-entry
- [1041294](http://www.securitytracker.com/id/1041294)  (securitytracker.com) vdb-entry
- [RHSA-2017:2810](https://access.redhat.com/errata/RHSA-2017:2810)  (access.redhat.com) vendor-advisory
- [RHSA-2017:1801](https://access.redhat.com/errata/RHSA-2017:1801)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2889](https://access.redhat.com/errata/RHSA-2017:2889)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2635](https://access.redhat.com/errata/RHSA-2017:2635)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2638](https://access.redhat.com/errata/RHSA-2017:2638)  (access.redhat.com) vendor-advisory
- [RHSA-2017:1417](https://access.redhat.com/errata/RHSA-2017:1417)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2423](https://access.redhat.com/errata/RHSA-2017:2423)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2808](https://access.redhat.com/errata/RHSA-2017:2808)  (access.redhat.com) vendor-advisory
- [1040200](http://www.securitytracker.com/id/1040200)  (securitytracker.com) vdb-entry
- [RHSA-2017:2636](https://access.redhat.com/errata/RHSA-2017:2636)  (access.redhat.com) vendor-advisory
- [RHSA-2017:3399](https://access.redhat.com/errata/RHSA-2017:3399)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2637](https://access.redhat.com/errata/RHSA-2017:2637)  (access.redhat.com) vendor-advisory
- [RHSA-2017:3244](https://access.redhat.com/errata/RHSA-2017:3244)  (access.redhat.com) vendor-advisory
- [RHSA-2017:3400](https://access.redhat.com/errata/RHSA-2017:3400)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2633](https://access.redhat.com/errata/RHSA-2017:2633)  (access.redhat.com) vendor-advisory
- [RHSA-2017:2811](https://access.redhat.com/errata/RHSA-2017:2811)  (access.redhat.com) vendor-advisory
- [RHSA-2017:1802](https://access.redhat.com/errata/RHSA-2017:1802)  (access.redhat.com) vendor-advisory
- [RHSA-2019:1545](https://access.redhat.com/errata/RHSA-2019:1545)  (access.redhat.com) vendor-advisory
- [\[druid-commits\] 20191115 \[GitHub\] \[incubator-druid\] ccaominh opened a new pull request #8878: Address security vulnerabilities](https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E)  (lists.apache.org) mailing-list
- [\[logging-dev\] 20191215 Re: Is there any chance that there will be a security fix for log4j-v1.2.17?](https://lists.apache.org/thread.html/e8fb7d76a244ee997ba4b217d6171227f7c2521af8c7c5b16cba27bc%40%3Cdev.logging.apache.org%3E)  (lists.apache.org) mailing-list
- [\[logging-dev\] 20191218 \[CVE-2019-17571\] Apache Log4j 1.2 deserialization of untrusted data in SocketServer](https://lists.apache.org/thread.html/eea03d504b36e8f870e8321d908e1def1addda16adda04327fe7c125%40%3Cdev.logging.apache.org%3E)  (lists.apache.org) mailing-list
- [\[oss-security\] 20191218 \[CVE-2019-17571\] Apache Log4j 1.2 deserialization of untrusted data in SocketServer](http://www.openwall.com/lists/oss-security/2019/12/19/2)  (openwall.com) mailing-list
- [\[announce\] 20191218 \[CVE-2019-17571\] Apache Log4j 1.2 deserialization of untrusted data in SocketServer](https://lists.apache.org/thread.html/84cc4266238e057b95eb95dfd8b29d46a2592e7672c12c92f68b2917%40%3Cannounce.apache.org%3E)  (lists.apache.org) mailing-list
- [\[logging-dev\] 20191219 Re: \[CVE-2019-17571\] Apache Log4j 1.2 deserialization of untrusted data in SocketServer](https://lists.apache.org/thread.html/0dcca05274d20ef2d72584edcf8c917bbb13dbbd7eb35cae909d02e9%40%3Cdev.logging.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20191226 \[jira\] \[Created\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/8ab32b4c9f1826f20add7c40be08909de9f58a89dc1de9c09953f5ac%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20191226 \[jira\] \[Created\] (TIKA-3018) log4j 1.2 version used by Apache Tika 1.23 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/44491fb9cc19acc901f7cff34acb7376619f15638439416e3e14761c%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20191226 \[jira\] \[Commented\] (TIKA-3018) log4j 1.2 version used by Apache Tika 1.23 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/277b4b5c2b0e06a825ccec565fa65bd671f35a4d58e3e2ec5d0618e1%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20191230 \[jira\] \[Created\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/479471e6debd608c837b9815b76eab24676657d4444fcfd5ef96d6e6%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20191230 \[jira\] \[Created\] (AMQ-7372) \[9.8\] \[CVE-2019-17571\] \[activemq-all\] \[5.15.10\]](https://lists.apache.org/thread.html/6114ce566200d76e3cc45c521a62c2c5a4eac15738248f58a99f622c%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200106 \[jira\] \[Commented\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/rf2567488cfc9212b42e34c6393cfa1c14e30e4838b98dda84d71041f%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200107 \[jira\] \[Commented\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/r3a85514a518f3080ab1fc2652cfe122c2ccf67cfb32356acb1b08fe8%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200108 \[jira\] \[Commented\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/rc1eaed7f7d774d5d02f66e49baced31e04827a1293d61a70bd003ca7%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200110 \[jira\] \[Commented\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/r681b4432d0605f327b68b9f8a42662993e699d04614de4851c35ffd1%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200111 Re: \[jira\] \[Commented\] (TIKA-3018) log4j 1.2 version used by Apache Tika 1.23 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/ra38785cfc0e7f17f8e24bebf775dd032c033fadcaea29e5bc9fffc60%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200111 \[jira\] \[Closed\] (TIKA-3018) log4j 1.2 version used by Apache Tika 1.23 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/r746fbc3fc13aee292ae6851f7a5080f592fa3a67b983c6887cdb1fc5%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200111 \[jira\] \[Resolved\] (TIKA-3018) log4j 1.2 version used by Apache Tika 1.23 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/rdec0d8ac1f03e6905b0de2df1d5fcdb98b94556e4f6cccf7519fdb26%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200114 \[jira\] \[Commented\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/rca24a281000fb681d7e26e5c031a21eb4b0593a7735f781b53dae4e2%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tika-dev\] 20200115 \[jira\] \[Commented\] (TIKA-3019) \[9.8\] \[CVE-2019-17571\] \[tika-app\] \[1.23\]](https://lists.apache.org/thread.html/r4b25538be50126194cc646836c718b1a4d8f71bd9c912af5b59134ad%40%3Cdev.tika.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200122 \[jira\] \[Updated\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/rd5dbeee4808c0f2b9b51479b50de3cc6adb1072c332a200d9107f13e%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200122 \[jira\] \[Assigned\] (AMQ-7372) \[9.8\] \[CVE-2019-17571\] \[activemq-all\] \[5.15.10\]](https://lists.apache.org/thread.html/r7bcdc710857725c311b856c0b82cee6207178af5dcde1bd43d289826%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200122 \[jira\] \[Updated\] (AMQ-7372) \[9.8\] \[CVE-2019-17571\] \[activemq-all\] \[5.15.10\]](https://lists.apache.org/thread.html/raedd12dc24412b3780432bf202a2618a21a727788543e5337a458ead%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200122 \[jira\] \[Assigned\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/r2ff63f210842a3c5e42f03a35d8f3a345134d073c80a04077341c211%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200122 \[jira\] \[Resolved\] (AMQ-7372) \[9.8\] \[CVE-2019-17571\] \[activemq-all\] \[5.15.10\]](https://lists.apache.org/thread.html/r3d666e4e8905157f3c046d31398b04f2bfd4519e31f266de108c6919%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200127 \[jira\] \[Commented\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/r61590890edcc64140e0c606954b29a063c3d08a2b41d447256d51a78%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200208 \[jira\] \[Commented\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/r2ce8d26154bea939536e6cf27ed02d3192bf5c5d04df885a80fe89b3%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200228 \[jira\] \[Commented\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/re8c21ed9dd218c217d242ffa90778428e446b082b5e1c29f567e8374%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200228 \[jira\] \[Resolved\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/rb1b29aee737e1c37fe1d48528cb0febac4f5deed51f5412e6fdfe2bf%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200228 \[jira\] \[Updated\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/r18f1c010b554a3a2d761e8ffffd8674fd4747bcbcf16c643d708318c%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[logging-commits\] 20200425 svn commit: r1059809 - /websites/production/logging/content/log4j/2.13.2/security.html](https://lists.apache.org/thread.html/ra9a682bc0a8dff1c5cefdef31c7c25f096d9121207cf2d74e2fc563d%40%3Ccommits.logging.apache.org%3E)  (lists.apache.org) mailing-list
- [oracle.com/security-alerts/cpuapr2020.html](https://www.oracle.com/security-alerts/cpuapr2020.html)
- [oracle.com/technetwork/security-advisory/cpujul2018-4258247…](http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html)
- [oracle.com/technetwork/security-advisory/cpujan2018-3236628…](http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html)
- [oracle.com/technetwork/security-advisory/cpuapr2018-3678067…](http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html)
- [oracle.com/technetwork/security-advisory/cpuoct2018-4428296…](http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html)
- [oracle.com/security-alerts/cpujul2020.html](https://www.oracle.com/security-alerts/cpujul2020.html)
- [oracle.com/technetwork/security-advisory/cpujan2019-5072801…](https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html)
- [oracle.com/technetwork/security-advisory/cpuapr2019-5072813…](https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html)
- [oracle.com/technetwork/security-advisory/cpujul2019-5072835…](https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html)
- [oracle.com/technetwork/security-advisory/cpuoct2019-5072832…](https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html)
- [oracle.com/security-alerts/cpujan2020.html](https://www.oracle.com/security-alerts/cpujan2020.html)
- [security.netapp.com/advisory/ntap-20181107-0002](https://security.netapp.com/advisory/ntap-20181107-0002/)
- [security.netapp.com/advisory/ntap-20180726-0002](https://security.netapp.com/advisory/ntap-20180726-0002/)
- [issues.apache.org/jira/browse/LOG4J2-1863](https://issues.apache.org/jira/browse/LOG4J2-1863)
- [\[bookkeeper-issues\] 20200729 \[GitHub\] \[bookkeeper\] padma81 opened a new issue #2387: Security vulnerabilities in the apache/bookkeeper-4.9.2 image](https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E)  (lists.apache.org) mailing-list
- [\[activemq-issues\] 20200730 \[jira\] \[Commented\] (AMQ-7370) log4j 1.2 version used by AMQ 5.15.10 / 5.15.11 is vulnerable to CVE-2019-17571](https://lists.apache.org/thread.html/r3784834e80df2f284577a5596340fb84346c91a2dea6a073e65e3397%40%3Cissues.activemq.apache.org%3E)  (lists.apache.org) mailing-list
- [\[geode-issues\] 20200831 \[jira\] \[Created\] (GEODE-8471) Dependency security issues in geode-core-1.12](https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2%40%3Cissues.geode.apache.org%3E)  (lists.apache.org) mailing-list
- [oracle.com/security-alerts/cpuoct2020.html](https://www.oracle.com/security-alerts/cpuoct2020.html)
- [oracle.com/security-alerts/cpujan2021.html](https://www.oracle.com/security-alerts/cpujan2021.html)
- [\[doris-commits\] 20210402 \[GitHub\] \[incubator-doris\] zh0122 opened a new pull request #5594: \[FE\]\[Bug\]Update log4j-web to fix a security issue](https://lists.apache.org/thread.html/rcbb79023a7c8494cb389cd3d95420fa9e0d531ece0b780b8c1f99422%40%3Ccommits.doris.apache.org%3E)  (lists.apache.org) mailing-list
- [\[beam-issues\] 20210528 \[jira\] \[Created\] (BEAM-12422) Vendored gRPC 1.36.0 is using a log4j version with security issues](https://lists.apache.org/thread.html/r0831e2e52a390758ce39a6193f82c11c295175adce6e6307de28c287%40%3Cissues.beam.apache.org%3E)  (lists.apache.org) mailing-list
- [oracle.com/security-alerts/cpuApr2021.html](https://www.oracle.com/security-alerts/cpuApr2021.html)
- [\[beam-github\] 20210701 \[GitHub\] \[beam\] lukecwik commented on pull request #15113: \[BEAM-12422\] Upgrade log4j version not affected by CVE-2017-5645](https://lists.apache.org/thread.html/rbfa7a0742be4981a3f9356a23d0e1a5f2e1eabde32a1a3d8e41420f8%40%3Cgithub.beam.apache.org%3E)  (lists.apache.org) mailing-list
- [\[beam-github\] 20210701 \[GitHub\] \[beam\] lukecwik opened a new pull request #15113: \[BEAM-12422\] Upgrade log4j version not affected by CVE-2017-5645](https://lists.apache.org/thread.html/r23369fd603eb6d62d3b883a0a28d12052dcbd1d6d531137124cd7f83%40%3Cgithub.beam.apache.org%3E)  (lists.apache.org) mailing-list
- [\[beam-github\] 20210701 \[GitHub\] \[beam\] codecov\[bot\] commented on pull request #15113: \[BEAM-12422\] Upgrade log4j version not affected by CVE-2017-5645](https://lists.apache.org/thread.html/r9d5c1b558a15d374bd5abd2d3ae3ca7e50e796a0efdcf91e9c5b4cdd%40%3Cgithub.beam.apache.org%3E)  (lists.apache.org) mailing-list
- [\[beam-github\] 20210701 \[GitHub\] \[beam\] codecov\[bot\] edited a comment on pull request #15113: \[BEAM-12422\] Upgrade log4j version not affected by CVE-2017-5645](https://lists.apache.org/thread.html/r94b5aae09c4bcff5d06cf641be17b00bd83ba7e10cad737bf16a1b8f%40%3Cgithub.beam.apache.org%3E)  (lists.apache.org) mailing-list
- [\[beam-github\] 20210701 \[GitHub\] \[beam\] suztomo commented on pull request #15113: \[BEAM-12422\] Upgrade log4j version not affected by CVE-2017-5645](https://lists.apache.org/thread.html/rdbd579dc223f06af826d7de340218ee2f80d8b43fa7e4decb2a63f44%40%3Cgithub.beam.apache.org%3E)  (lists.apache.org) mailing-list
- [oracle.com/security-alerts/cpuoct2021.html](https://www.oracle.com/security-alerts/cpuoct2021.html)
- [oracle.com/security-alerts/cpujan2022.html](https://www.oracle.com/security-alerts/cpujan2022.html)

## Timeline

1. ID reserved Jan 29, 2017
2. Record published Apr 17, 2017
3. Record last updated Oct 8, 2026

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:58 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)