⚡ ACTIVELY EXPLOITED 58/100 CVSS 6.5 🤖 AI SECURITYPublished: June 19, 2026

AutoJack: How a single page can RCE the host running your AI agent

AutoJack is a novel exploit chain showing how a single malicious webpage can turn an AI browsing agent into a remote code execution vector on the host machine. By abusing trust in localhost, missing authentication, and unsafe parameter handling, attackers can trigger arbitrary process execution through AutoGen Studio’s MCP WebSocket. The research h...

6.5

CVSS Score

MEDIUM

Threat Level

Priority /100

YES

Exploited ITW

Monitor

CISA Status

Sources

⚠️

ACTIVE EXPLOITATION DETECTED

Exploitation confirmed in the wild. Emergency patching required. Score: 58/100 — do not wait for maintenance window.

📋 Executive Summary

⚡ Analyst Assessment — SENTINEL APEX v4.0

CYBERDUDEBIVASH SENTINEL APEX has confirmed a MEDIUM-tier threat intelligence signal for MICROSOFT_SECURITY-3f629a34135ccac1 affecting microsoft_security Threat Intelligence. Composite threat score: 58/100. Intelligence corroborated across 1 source(s): microsoft_security. CVSS base score: 6.5. Active exploitation detected in the wild — emergency response required.

Intelligence sources: microsoft_security

⚠️ Business Impact Analysis

⚠️ Threat actors actively targeting this vulnerability — attack window is open now
⚠️ Remote code execution — full server takeover without authentication possible

🔗 Attack Chain Analysis

Step-by-step attack chain based on observed TTPs and vulnerability characteristics:

#	Phase	Attacker Action	MITRE
1	Reconnaissance	Attacker identifies exposed Threat Intelligence instances via Shodan, Censys, or targeted scanning	`TA0043`
2	Initial Access	Exploitation of MICROSOFT_SECURITY-3f629a34135ccac1 in microsoft_security Threat Intelligence	`T1190`
3	Execution	Remote code execution achieved — attacker runs arbitrary commands on target system	`T1203`
4	Persistence	Backdoor, scheduled task, or new admin account created for persistent access	`T1053`
5	Command & Control	Attacker establishes persistent C2 channel using HTTPS or DNS tunneling	`T1071`
6	Impact / Objectives	Intellectual property theft, espionage, cryptomining, or preparation for future attack stage	`T1657`

⚠ Deep Dive Analysis

AI and machine learning security vulnerabilities represent an emerging attack surface that most organizations are unprepared to defend. SENTINEL APEX tracks AI security threats including prompt injection, model poisoning, and AI-assisted cyberattacks.

SENTINEL APEX URGENCY: ELEVATED. Score: 58/100 MEDIUM. Active exploitation confirmed — treat as active incident requiring immediate response.

🎯 MITRE ATT&CK Mapping

Category	Mapping
Primary Tactic	ML Attack Staging
Primary Technique	AML.T0040 — ML Attack Staging
Sub-Technique	AML.T0000 — AI/ML System Enumeration
Weakness (CWE)	See NVD entry
Intel Type	🤖 AI SECURITY
Source(s)	microsoft_security

🛡️ SOC Response Playbook

1IMMEDIATE (0-1hr): Identify all instances of Threat Intelligence in your environment via CMDB/asset inventory
2IMMEDIATE (0-1hr): Apply vendor patch — no maintenance window exception for MEDIUM threats
3IMMEDIATE (1-2hr): If no patch available: implement WAF rules, ACLs, or network-level compensating controls
4SHORT-TERM (2-4hr): Deploy Sigma detection rule to SIEM — validate alert generation in test environment
5SHORT-TERM (4-8hr): Review logs for exploitation indicators (anomalous Threat Intelligence requests, error spikes)
6SHORT-TERM (8-24hr): Hunt for post-exploitation: new admin accounts, scheduled tasks, lateral movement
7MONITOR: Subscribe to microsoft_security security advisories for patch updates
8ONGOING: Track SENTINEL APEX intelligence feed for follow-on campaigns targeting Threat Intelligence

📎 Intelligence References

www.microsoft.com/en-us/security/blog/2026/06/18/autojack-single-page-

🤖 AI Security Intelligence Analysis

Dimension	Assessment
AI Attack Type	Agentic AI Abuse
Affected AI Systems	Microsoft Copilot
OWASP LLM Top 10	OWASP LLM Top 10 — See full catalog
MITRE ATLAS Mapping	AML.T0040 — ML Attack Staging
AI Governance Impact	AI deployment risk — organizations using affected models must audit all AI-assisted workflows.

SENTINEL APEX AI Security Guidance: Implement input validation, output filtering, prompt injection defenses, and continuous red-teaming. Reference: OWASP LLM Top 10 · MITRE ATLAS Hub

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Related Resources — SENTINEL APEX

🔭Threat Intelligence Hub 🎯MITRE ATT&CK Detections 🤖OWASP LLM Top 10 📦Detection Pack Store ⚡SOC Pro Plans 🏢Enterprise Contact

⚡ CYBERDUDEBIVASH SENTINEL APEX v4.0

Intelligence report generated by CYBERDUDEBIVASH SENTINEL APEX v4.0
Report ID: SENTINEL-MICROSOFT_SECURITY-3f629a34135ccac1-2026-06-19 | Priority: 58/100 MEDIUM | Sources: 1
© 2026 CYBERDUDEBIVASH PRIVATE LIMITED
Republication requires written attribution to CYBERDUDEBIVASH SENTINEL APEX

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