VulnerabilitiesOct 28, 2026

Hackers Target Critical Oracle E-Business Suite RCE Flaw Days After Security Patch

Hackers probe critical Oracle E-Business Suite RCE flaw days after patch release

Threat actors are actively exploiting CVE-2026-101767, a critical unauthenticated SQL injection vulnerability (CVSS 9.8) in Oracle E-Business Suite's Thin Client Framework that chains to remote code execution. The flaw was patched by Oracle in its latest Critical Patch Update, but Defused Cyber detected exploratory probes within hours of the patch release. Successful exploitation allows attackers to execute arbitrary SQL commands and OS commands with EBS application privileges, potentially exposing sensitive financial, payroll, HR, and procurement data.

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The lesson from this incident

Full lesson

Threat actors began probing CVE-2026-101767 within hours of Oracle releasing its Critical Patch Update, demonstrating how the window between patch release and exploitation has collapsed to near-zero. The vulnerability — a CVSS 9.8 unauthenticated SQL injection in Oracle E-Business Suite — requires no credentials, dramatically lowering the bar for attackers. Organizations that treat patching as a scheduled, low-urgency task rather than an emergency response function are left exposed during this critical gap. The stakes are especially high here because successful exploitation can expose sensitive financial, payroll, HR, and procurement data, making EBS a high-value target for both ransomware and espionage actors.

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 exampleTenable Vulnerability Management Axonius Exposures Holm Security Platform all options
Automated patch management
Known holes get closed in days, not months.
For exampleMicrosoft Intune NinjaOne Patch Management ManageEngine Patch Manager Plus all options
Network segmentation and microsegmentation
One compromised machine can no longer reach everything else.
For exampleThreatLocker Zero Trust Endpoint Firewall Illumio Segmentation Akamai Guardicore Segmentation all options

Indicators of Compromise

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

cve — CVE-2026-101767
malware — Cl0p

Entities

Oracle E-Business Suite (product)Oracle (vendor)Defused Cyber (vendor)Horizon3.ai (vendor)Cl0p (threat_actor)