⚡ ACTIVELY EXPLOITED 78/100 CVSS 8.5 🛡️ ADVISORYPublished: May 28, 2026

Supply Chain Compromises Impact Nx Console and GitHub Repositories

<p>CISA is prioritizing the response to multiple emerging software supply chain intrusion campaigns targeting developer ecosystems Continuous Integration/Continuous Development (CI/CD) pipelines. These recent incidents, including the GitHub compromise via a malicious Nx Console Visual Studio Code (VS Code) extension and the “Megalodon” supply...

8.5

CVSS Score

HIGH

Threat Level

Priority /100

YES

Exploited ITW

Monitor

CISA Status

Sources

⚠️

ACTIVE EXPLOITATION DETECTED

Exploitation confirmed in the wild. Emergency patching required. Score: 78/100 — do not wait for maintenance window.

📋 Executive Summary

⚡ Analyst Assessment — SENTINEL APEX v4.0

CYBERDUDEBIVASH SENTINEL APEX has confirmed a HIGH-tier threat intelligence signal for CISA-d46d4bdb48fd771c affecting CISA US-CERT Multiple Products. Composite threat score: 78/100. Intelligence corroborated across 1 source(s): cisa_alerts. CVSS base score: 8.5. Active exploitation detected in the wild — emergency response required.

Intelligence sources: cisa_alerts

⚠️ Business Impact Analysis

⚠️ Threat actors actively targeting this vulnerability — attack window is open now
⚠️ Supply chain compromise — downstream customers may be affected

🔗 Attack Chain Analysis

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

#	Phase	Attacker Action	MITRE
1	Reconnaissance	Attacker identifies exposed Multiple Products instances via Shodan, Censys, or targeted scanning	`TA0043`
2	Initial Access	Exploitation of CISA-d46d4bdb48fd771c in CISA US-CERT Multiple Products	`T1190`
3	Persistence	Backdoor, scheduled task, or new admin account created for persistent access	`T1053`
4	Command & Control	Attacker establishes persistent C2 channel using HTTPS or DNS tunneling	`T1071`
5	Impact / Objectives	Intellectual property theft, espionage, cryptomining, or preparation for future attack stage	`T1657`

⚠ Deep Dive Analysis

This security advisory from CISA US-CERT covers critical remediation requirements. SENTINEL APEX recommends treating all vendor advisories as actionable intelligence requiring timely response.

SENTINEL APEX URGENCY: HIGH. Score: 78/100 HIGH. Active exploitation confirmed — treat as active incident requiring immediate response.

🎯 MITRE ATT&CK Mapping

Category	Mapping
Primary Tactic	Initial Access
Primary Technique	T1195 — Supply Chain Compromise
Sub-Technique	T1199 — Trusted Relationship
Weakness (CWE)	See NVD entry
Intel Type	🛡️ ADVISORY
Source(s)	cisa_alerts

🔴 CVE Reference

CVE ID	Reference	Score
CVE-2026-48027	NVD →	8.5

🏷️ Indicators of Compromise — Enriched IOC Feed

Normalized IOCs with confidence scoring. Block immediately across all enforcement points. SOC Pro subscribers receive enriched IOC bundles with full attribution and STIX/TAXII feeds.

Indicator Value	Type	Confidence	First Seen
https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w	url	82%	2026-05-29
https://www.cve.org/CVERecord?id=CVE-2026-48027	url	82%	2026-05-29
https://github.blog/security/investigating-unauthorized-access-to-githubs-intern	url	82%	2026-05-29
https://nx.dev/blog/nx-console-v18-95-0-postmortem	url	82%	2026-05-29
https://www.ox.security/blog/megalodon-cicd-malware-github/	url	82%	2026-05-29
www.cve.org	domain	75%	2026-05-29
www.stepsecurity.io	domain	75%	2026-05-29
safedep.io	domain	75%	2026-05-29

🔍 Detection Rules — Sigma (SIEM)

Deploy to Splunk, Elastic, Microsoft Sentinel, or QRadar. SOC Pro subscribers receive pre-compiled SIEM-native query packs updated with each pipeline run.

Sigma YAMLtitle: CISA-d46d4bdb48fd771c Exploitation Attempt — CISA US-CERT Multiple Products
id: 32a859ed40ff5c22-8ede
status: experimental
description: Detects exploitation of CISA-d46d4bdb48fd771c in CISA US-CERT Multiple Products. Priority: HIGH. Score: 78/100
author: CYBERDUDEBIVASH SENTINEL APEX v4.0 (bivash@cyberdudebivash.com)
date: 2026-05-29
references:
    - https://nvd.nist.gov/vuln/detail/CISA-d46d4bdb48fd771c
    - https://blog.cyberdudebivash.in/
tags:
    - attack.initial_access
    - attack.t1190
    - cve-2026-48027
logsource:
    category: webserver
detection:
    keywords:
        - 'CVE-2026-48027'
        - 'cisa-d46d4bdb48fd771c'
    condition: keywords
falsepositives:
    - Security scanners
level: high

📡 Detection Rules — YARA (Endpoint)

Deploy to endpoint detection platforms. Enterprise subscribers receive tuned, FP-validated YARA rule packs.

YARArule CISA_d46d4bdb48fd771c_Exploitation {
    meta:
        description = "Detects artifacts related to CISA-d46d4bdb48fd771c exploitation in CISA US-CERT Multiple Products"
        author      = "CYBERDUDEBIVASH SENTINEL APEX v4.0"
        date        = "2026-05-29"
        severity    = "HIGH"
        cvss        = "8.5"
        priority    = "78/100"
        threat_level = "HIGH"
        reference   = "https://nvd.nist.gov/vuln/detail/CISA-d46d4bdb48fd771c"
    strings:
        $id_str  = "CISA-d46d4bdb48fd771c" ascii nocase
        $product = "Multiple_Products" ascii nocase wide
    condition:
        any of them
}

🛡️ SOC Response Playbook

1IMMEDIATE (0-1hr): Identify all instances of Multiple Products in your environment via CMDB/asset inventory
2IMMEDIATE: Block all 8 IOCs in this report at firewall, proxy, DNS, and EDR simultaneously
3IMMEDIATE (0-1hr): Apply vendor patch — no maintenance window exception for HIGH threats
4IMMEDIATE (1-2hr): If no patch available: implement WAF rules, ACLs, or network-level compensating controls
5SHORT-TERM (2-4hr): Deploy Sigma detection rule to SIEM — validate alert generation in test environment
6SHORT-TERM (4-8hr): Review logs for exploitation indicators (anomalous Multiple Products requests, error spikes)
7SHORT-TERM (8-24hr): Hunt for post-exploitation: new admin accounts, scheduled tasks, lateral movement
8MONITOR: Subscribe to CISA US-CERT security advisories for patch updates
9ONGOING: Track SENTINEL APEX intelligence feed for follow-on campaigns targeting Multiple Products

📎 Intelligence References

www.cisa.gov/news-events/alerts/2026/05/28/supply-chain-compromises-im

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⚡ CYBERDUDEBIVASH SENTINEL APEX v4.0

Intelligence report generated by CYBERDUDEBIVASH SENTINEL APEX v4.0
Report ID: SENTINEL-CISA-d46d4bdb48fd771c-2026-05-29 | Priority: 78/100 HIGH | Sources: 1
© 2026 CYBERDUDEBIVASH PRIVATE LIMITED
Republication requires written attribution to CYBERDUDEBIVASH SENTINEL APEX

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