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MEDIUM

CVE-2020-25689

CVSS v3

6.5

MEDIUM

EPSS Score

1.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • org.wildfly:wildfly-distMavenall versions · fixed in 21.0.1
  • wildflyBitnamiall versions · fixed in 21.0.1

Vendor advisories

  • CVE-2020-25689 Red Hat Product Security345 products fixed · 3 known affected

    wildfly-core: memory leak in WildFly host-controller in domain mode while not able to reconnect to domain-controller

    wildfly-core as a component of Red Hat JBoss Data Grid 7 · wildfly-core as a component of Red Hat JBoss Fuse 6 · wildfly-core as a component of Red Hat OpenShift Application Runtimes

  • RHSA-2022:5532 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Fuse 7.11.0 release and security update

  • RHSA-2021:0295 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat build of Thorntail 2.7.3 security and bug fix update

  • RHSA-2021:0327 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.4.5 security update

  • RHSA-2021:0248 Red Hat Product Security113 products fixed

    Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.5 security update

  • RHSA-2021:0247 Red Hat Product Security115 products fixed

    Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.5 security update

2 more advisories

Full record on NVD

Description

A memory leak flaw was found in WildFly in all versions up to 21.0.0.Final, where host-controller tries to reconnect in a loop, generating new connections which are not properly closed while not able to connect to domain-controller. This flaw allows an attacker to cause an Out of memory (OOM) issue, leading to a denial of service. The highest threat from this vulnerability is to system availability.

Technical details

Published
2020-11-02

Frequently asked questions

What is CVE-2020-25689?

A memory leak flaw was found in WildFly in all versions up to 21.0.0.Final, where host-controller tries to reconnect in a loop, generating new connections which are not properly closed while not able to connect to domain-controller. This flaw allows an attacker to cause an Out of memory (OOM) issue, leading to a denial of service. The highest threat from this vulnerability is to system availability.

Is CVE-2020-25689 actively exploited?

Active exploitation of CVE-2020-25689 has not been confirmed. Its EPSS score was 1.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-25689?

CVE-2020-25689 has a CVSS v3 base score of 6.5 (MEDIUM severity).

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