How severe is CVE-2020-14644?

CVE-2020-14644 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which products are affected by CVE-2020-14644?

CVE-2020-14644 affects the following products: oracle weblogic server.

How do I patch CVE-2020-14644?

No patch has shipped for CVE-2020-14644 yet — track the oracle weblogic server advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2020-14644 across my infrastructure?

Inventory every oracle weblogic server deployment and check each version against the affected-products list above.

How do I mitigate CVE-2020-14644 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2020-14644 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2020-14644, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2020-14644?

CVE-2020-14644 has an EPSS (Exploit Prediction Scoring System) score of 94.5%, placing it in the 100th 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. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2020-14644 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2020-14644 (Oracle WebLogic Server Remote Code Execution Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2024-09-18. CISA required all US federal civilian agencies to remediate this vulnerability by 2024-10-09. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2020-14644?

CVE-2020-14644 affects oracle weblogic server (3 versions, e.g. 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2020-14644 published, and has it been updated?

CVE-2020-14644 was published on July 15, 2020 and was last updated on January 12, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

CRITICAL severity

CVE-2020-14644 — Weblogic Server

CRITICAL

CVE-2020-14644 is a critical-severity (CVSS 9.8) vulnerability in oracle weblogic server. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-09-18) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily…

Published

Jul 15, 2020

Updated

Jan 12, 2026

Affected

1 product

Patched

See advisory

Exploits

1 known

Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-09-18. Federal agencies were required to remediate by 2024-10-09.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2020-14644.

EPSS Exploitation Probability

via FIRST.org ↗

94.5%probability of exploitation in next 30 days

Very High Risk0.00%

Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk

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

How urgent is this, really

CVE-2020-14644 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected Products

1 product · 3 configurations

Application

weblogic serveroracle

3 versions

12.2.1.3.012.2.1.4.014.1.1.0.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Mid…

cisa.govCISASep 2024

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every oracle weblogic server deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2020-14644 yet — track the oracle weblogic server advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2020-14644 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works