How severe is CVE-2020-10740?

CVE-2020-10740 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2020-10740?

CVE-2020-10740 affects the following packages: org.wildfly:wildfly-parent (Maven). Ecosystems affected: Maven.

How do I fix CVE-2020-10740?

Update org.wildfly:wildfly-parent to 20.0.0.Final or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-10740 is resolved across your whole dependency graph.

How do I detect CVE-2020-10740 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.wildfly:wildfly-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2020-10740 if there is no patch (or I can't update yet)?

Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Is CVE-2020-10740 actively exploited in the wild?

No public exploit code has been indexed for CVE-2020-10740 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2020-10740?

CVE-2020-10740 has an EPSS (Exploit Prediction Scoring System) score of 2.1%, placing it in the 81th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2020-10740?

CVE-2020-10740 is classified as Deserialization of Untrusted Data (CWE-502). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2020-10740 published, and has it been updated?

CVE-2020-10740 was published on June 22, 2020 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2020-10740 — wildfly-parent

HIGH

CVE-2020-10740 is a high-severity (CVSS 7.5) Deserialization of Untrusted Data vulnerability in org.wildfly:wildfly-parent. A fix is available for org.wildfly:wildfly-parent — see the affected versions and patch details below.

Wildfly Unsafe Deserialization Vulnerability

Also known asBIT-wildfly-2020-10740GHSA-vrmw-2xhq-hrmp

Published

Jun 22, 2020

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs81th percentile — riskier than 81% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.wildfly:wildfly-parent

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

A vulnerability was found in Wildfly in versions before 20.0.0.Final, where a remote deserialization attack is possible in the Enterprise Application Beans(EJB) due to lack of validation/filtering capabilities in wildfly.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.wildfly:wildfly-parent`	all versions	20.0.0.Final`org.wildfly:wildfly-parent:20.0.0.Final`

Affected Products

1 product · 1 configurations

Application

wildflyredhat

< 20.0.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.wildfly:wildfly-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.wildfly:wildfly-parent to 20.0.0.Final or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-10740 is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

Workaround published by Red Hat

There is currently no known mitigation for this issue.

Source: Red Hat security advisory for CVE-2020-10740 (CC BY 4.0)

Product	Fixed in	Advisory
EAP-CD 20 Tech Preview	`wildfly`	RHSA-2020:3585
Red Hat Fuse 7.8.0	`wildfly`	RHSA-2020:5568
Red Hat JBoss EAP 7.2	see advisory	RHSA-2020:3144
Red Hat JBoss Enterprise Application Platform 7	see advisory	RHSA-2020:3642
Red Hat JBoss Enterprise Application Platform 7	`wildfly`	RHSA-2020:3143
Red Hat JBoss Enterprise Application Platform 7	`wildfly`	RHSA-2020:3464
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	`eap7-glassfish-el-0:3.0.1-4.b08_redhat_00005.1.ep7.el7`	RHSA-2025:9582
Red Hat JBoss Enterprise Application Platform 7.2 for RHEL 6	`eap7-jboss-ejb-client-0:4.0.33-2.SP1_redhat_00001.1.el6eap`	RHSA-2020:3142

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2020-10740 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

7.5/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-502Deserialization of Untrusted Data

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

OpenSSF Scorecard

Package health score

wildfly

6.3/10

Code-Review10/10

Maintained10/10

Branch-ProtectionN/A

Assessed Nov 2, 2026

Timeline

Disclosed

Jun 22, 2020

Last updated

Oct 24, 2026

Identifiers

CVE-2020-10740

GHSA-vrmw-2xhq-hrmp

BIT-wildfly-2020-10740

References

Advisorynvd.nist.gov · CVE 2020 10740 Reportbugzilla.redhat.com · show bug.cgi Packagegithub.com · wildfly

Related vulnerabilities

Also affects wildfly-parent

This CVE is high severity; 2 of 5 other CVEs affecting wildfly-parent are rated as high or higher (top: high).

CVE-2020-27822CVE-2015-3198CVE-2016-0793CVE-2020-25640CVE-2021-3536

Same weakness: CWE-502

This CVE is high severity, in line with the other 3 CVEs with CWE-502.

CVE-2026-115878CVE-2026-62848CVE-2026-115912Browse all CWE-502

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2020-10740 — wildfly-parent

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is CVE-2020-10740 in your dependencies?