Threats / Oracle / CVE-2020-14644
CVE-2020-14644
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Oracle WebLogic Server vulnerability
Oracle WebLogic Server contains an unauthenticated deserialization vulnerability in T3/IIOP protocols allowing remote code execution. Actively exploited in the wild with high exploit probability.
Verdict
Today item — known-exploited.
Unauthenticated network attackers can exploit unsafe deserialization in WebLogic Server's T3 and IIOP protocol handlers to execute arbitrary code without authentication, enabling full system compromise.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
2 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-09-18).
Probability (EPSS)
EPSS 0.94548 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Oracle, WebLogic Server. Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious serialized Java object and send it via T3 or IIOP protocol to an exposed WebLogic Server instance.
Business
Attacker gains unauthenticated code execution on critical middleware infrastructure, bypassing all access controls.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I trigger deserialization of the malicious payload within the WebLogic process, causing arbitrary code execution with server privileges.
Business
Entire application server and hosted applications are compromised, enabling data theft, lateral movement, and operational disruption.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish persistent access and move laterally through the enterprise network from the compromised middleware tier.
Business
Breach scope expands beyond WebLogic to connected systems, databases, and sensitive business operations.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05