3CX Supply Chain Attack
Malicious update backdoor in 3CX VoIP software
The 3CX supply-chain attack used a backdoored software installer (2023-03) to deliver a malicious update into 3CX VoIP deployments, with attribution still under discussion (2023-05); source: researchers' own disclosure.
Definition
Malicious update backdoor in 3CX VoIP software
Why It Matters / Impact
Malicious update backdoor in 3CX VoIP software
Current Status
- Review status: published
- Last updated: 2026-08-26
- Evidence: 2 source(s) · 0 CVE(s) linked
- Confidence: 85%
Timeline
- 2023-03 — Backdoored installer
- 2023-05 — Attribution discussion
Sources
Start Investigation
Move from reading to investigating 3CX Supply Chain Attack. The workspace is a structured analysis surface — not a chat — organised as:
- Question — what do you need to know about 3CX Supply Chain Attack?
- Evidence — assertions mapped to verifiable references.
- Timeline — events in chronological order.
- Related Entities — CVE, threat actor, campaign, malware links.
- Sources — NVD, CISA KEV, MITRE ATT&CK, vendor advisories.
- Notes — your own observations and working hypotheses.
AI assistance is limited to summarising, explaining, and suggesting related evidence. AI never completes your investigation, modifies entity relationships, or generates facts — all published analysis stays human-reviewed.
Recommended Tools
- IOC LookupSearch OpenTrojan intelligence for indicators tied to this campaign.Look up IOC
Every tool runs passively or locally — inputs are never stored and no target is scanned. Start an investigation on this entity →