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CVE-2020-25644: A memory leak flaw was found in WildFly OpenSSL in versions prior to 1.1.3.Final, where it removes an HTTP ses

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HIGH 7.5REMOTEWATCHLISTUPGRADEDOWNGRADEDOWNGRADE

CVE-2020-25644 is a high-severity flaw (CVSS 7.5) affecting wildfly openssl, data grid, jboss data grid. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A memory leak flaw was found in WildFly OpenSSL in versions prior to 1.1.3.Final, where it removes an HTTP session. It may allow the attacker to cause OOM leading to a denial of service. The highest threat from this vulnerability is to system availability.

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance2.4% (top 16%)
CISA exploited listNo
WeaknessCWE-401
Published2020-10-06
Last modified2026-06-17
Publisher (CNA): Red Hat, Inc. · Vendor: redhat

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

redhat wildfly openssl UPGRADE
Affected: < 1.1.3
Fixed in: 1.1.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy wildfly-openssl || rpm -q wildfly-openssl || wildfly-openssl --version
2. UPGRADE to 1.1.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade wildfly-openssl
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade wildfly-openssl
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
redhat data grid DOWNGRADE
Affected: 8.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 8.0
1. Check installed version
apt-cache policy data-grid || rpm -q data-grid || data-grid --version
2. No fixed release: DOWNGRADE to a release before 8.0 (Debian / Ubuntu)
apt-cache madison data-grid sudo apt install data-grid=<VERSION_BEFORE_8.0> sudo apt-mark hold data-grid
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list data-grid sudo dnf downgrade data-grid-<VERSION_BEFORE_8.0> sudo dnf versionlock add data-grid
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
redhat jboss data grid DOWNGRADE
Affected: 7.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.0.0
1. Check installed version
apt-cache policy jboss-data-grid || rpm -q jboss-data-grid || jboss-data-grid --version
2. No fixed release: DOWNGRADE to a release before 7.0.0 (Debian / Ubuntu)
apt-cache madison jboss-data-grid sudo apt install jboss-data-grid=<VERSION_BEFORE_7.0.0> sudo apt-mark hold jboss-data-grid
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list jboss-data-grid sudo dnf downgrade jboss-data-grid-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add jboss-data-grid
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
redhat jboss enterprise application platform DOWNGRADE
Affected: 7.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.0.0
1. Check installed version
apt-cache policy jboss-enterprise-application-platform || rpm -q jboss-enterprise-application-platform || jboss-enterprise-application-platform --version
2. No fixed release: DOWNGRADE to a release before 7.0.0 (Debian / Ubuntu)
apt-cache madison jboss-enterprise-application-platform sudo apt install jboss-enterprise-application-platform=<VERSION_BEFORE_7.0.0> sudo apt-mark hold jboss-enterprise-application-platform
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list jboss-enterprise-application-platform sudo dnf downgrade jboss-enterprise-application-platform-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add jboss-enterprise-application-platform
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
redhat jboss fuse DOWNGRADE
Affected: 7.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.0.0
1. Check installed version
apt-cache policy jboss-fuse || rpm -q jboss-fuse || jboss-fuse --version
2. No fixed release: DOWNGRADE to a release before 7.0.0 (Debian / Ubuntu)
apt-cache madison jboss-fuse sudo apt install jboss-fuse=<VERSION_BEFORE_7.0.0> sudo apt-mark hold jboss-fuse
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list jboss-fuse sudo dnf downgrade jboss-fuse-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add jboss-fuse
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
redhat openshift application runtimes MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy openshift-application-runtimes || rpm -q openshift-application-runtimes || openshift-application-runtimes --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-25644?

wildfly openssl: upgrade to 1.1.3; data grid: downgrade or apply the listed mitigation; jboss data grid: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-25644 being exploited?

CVE-2020-25644 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-25644 affect?

CVE-2020-25644 affects wildfly openssl, data grid, jboss data grid. Severity is high (CVSS 7.5). A memory leak flaw was found in WildFly OpenSSL in versions prior to 1.1.3.Final, where it removes an HTTP session. It may allow the attacker to cause OOM leading to a denial of service. The highest threat from this vulnerability is to syst

How urgent is CVE-2020-25644?

Priority 57/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

OpenSSL vulnerabilities · JBoss and WildFly vulnerabilities · Red Hat OpenShift vulnerabilities

References

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