MOVEit Transfer Cl0p Mass Exploitation
June 2023 exploitation of the MOVEit Transfer SQL-injection zero-day (CVE-2023-34362) by the Cl0p ransomware group, breaching hundreds of organizations through a single file-transfer platform.
Cl0p's June 2023 exploitation of MOVEit Transfer (CVE-2023-34362, SQL injection) breached hundreds of organizations from one third-party file-transfer platform, exfiltrating data before the zero-day was disclosed.
Definition
Mass exploitation of MOVEit Transfer exploited the same SQL-injection flaw (CVE-2023-34362) to deploy a web shell, enumerate databases and exfiltrate corporate data; later extortion leveraged stolen records.
Why It Matters / Impact
Hundreds of organizations breached (multiple Fortune 500 customers of MOVEit); CISA KEV added MOVEit CVEs; contributed to new zero-day patch-race guidance for third-party software.
Current Status
- Review status: published
- Last updated: 2026-08-26
- Evidence: 3 source(s) · 1 CVE(s) linked
- Confidence: 92%
Threat Actors
Timeline
- 2023-05-27 — First observed exploitation of CVE-2023-34362
- 2023-05-31 — Progress discloses the MOVEit Transfer zero-day
- 2023-06-09 — Progress confirms patch; hunting web shells advised
Sources
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- 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.
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