VulnerabilitiesOct 28, 2026

Hackers Actively Exploiting New Oracle EBS RCE Vulnerability

Hackers are testing a critical Oracle EBS RCE vulnerability, CVE-2026-101767, which was patched in October.

Hackers have been observed testing a critical Oracle E-Business Suite vulnerability (CVE-2026-101767) that allows for unauthenticated remote code execution. Threat intelligence firm Defused reported exploratory exploit attempts against its decoy systems on October 27, 2026. While these attempts do not confirm successful breaches, Oracle had already released a patch for the vulnerability, discovered by Horizon3.ai, in its October Critical Patch Update.

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The lesson from this incident

Full lesson

Attackers began probing CVE-2026-101767 in Oracle E-Business Suite almost immediately after its public disclosure, even though Oracle had already shipped a fix in its October Critical Patch Update. The vulnerability allows unauthenticated remote code execution, meaning any internet-facing EBS instance without the patch is fully exposed without requiring valid credentials. This incident illustrates the dangerously short window between patch release and active exploitation, often measured in days rather than weeks. Organizations that lack a disciplined, prioritized patching process for critical enterprise applications hand attackers a predictable and exploitable gap.

What helps against this

How we list vendors

Defused research Horizon3.ai research Oracle affected

Vulnerability scanning and prioritisation
You know which systems are vulnerable, and which ones to fix first.
For exampleRapid7 Exposure Command (InsightVM)Holm Security Platform Tenable Vulnerability Management all options
Automated patch management
Known holes get closed in days, not months.
For exampleMicrosoft Intune Action1 Patch Management Qualys Patch Management all options
Threat intelligence
Attack campaigns reach your sector, suppliers or software before your team hears about them.
For exampleCrowdStrike Falcon Adversary Intelligence Google Threat Intelligence Recorded Future Cyber Operations all options

Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

cve — CVE-2026-101767

Entities

Oracle E-Business Suite (product)Oracle (vendor)Thin Client Framework (product)Defused (vendor)Horizon3.ai (vendor)