# MOVEit Transfer zero-day: Cl0p mass data theft · pwn.watch

> Cl0p (Lace Tempest) exploited an unauthenticated SQL injection in Progress MOVEit Transfer as a zero-day, stealing files from thousands of organisations through their managed file transfer servers. Progress shipped three rounds of fixes in June 2023 as more SQL injection bugs were found.

Page: https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023 · generated 2026-10-22T22:00:08.805Z

## Status
- Severity: critical · status: closed · patch: patched
- Product: Progress MOVEit Transfer
- Started: 2023-05-27 · closed: 2023-06-16
- CVEs: CVE-2023-34362, CVE-2023-35036, CVE-2023-35708
- Affected: CVE-2023-34362: before 2021.0.6 (13.0.6), 2021.1.4 (13.1.4), 2022.0.4 (14.0.4), 2022.1.5 (14.1.5), 2023.0.1 (15.0.1) (NVD); CVE-2023-35036: before 2021.0.7 (13.0.7), 2021.1.5 (13.1.5), 2022.0.5 (14.0.5), 2022.1.6 (14.1.6), 2023.0.2 (15.0.2) (NVD); CVE-2023-35708: before 2021.0.8 (13.0.8), 2021.1.6 (13.1.6), 2022.0.6 (14.0.6), 2022.1.7 (14.1.7), 2023.0.3 (15.0.3) (NVD)
- Fixed in: 2021.0.8 (13.0.8); 2021.1.6 (13.1.6); 2022.0.6 (14.0.6); 2022.1.7 (14.1.7); 2023.0.3 (15.0.3); Older branches: see vendor advisory

## Follow this incident
- RSS (one item per update): https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023/feed.xml
- JSON Feed: https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023/feed.json
- Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023.json
- This file: https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023/llms.txt

## Updates (newest first)
- 2023-06-16: Third round of fixes for CVE-2023-35708 after a public proof of concept (https://nvd.nist.gov/vuln/detail/CVE-2023-35708)
- 2023-06-09: Progress fixes more SQL injection bugs found during code review (CVE-2023-35036) (https://nvd.nist.gov/vuln/detail/CVE-2023-35036)
- 2023-06-07: CISA and FBI publish joint advisory AA23-158A attributing the campaign to the Cl0p ransomware gang (TA505) (https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-158a)
- 2023-06-02: CISA adds CVE-2023-34362 to the KEV catalog
- 2023-05-31: Progress discloses the critical MOVEit Transfer vulnerability and ships patches (https://community.progress.com/s/article/MOVEit-Transfer-Critical-Vulnerability-31May2023)
- 2023-05-27: Earliest exploitation of the MOVEit Transfer zero-day seen by Mandiant (https://cloud.google.com/blog/topics/threat-intelligence/zero-day-moveit-data-theft)

## Fix brief
# Security brief: MOVEit Transfer zero-day: Cl0p mass data theft

Source: https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023 · status: closed (closed Jun 16, 2023) · severity: critical · updated Jun 16, 2023

## Patch status
**PATCHED: fixed releases exist. Upgrade to a fixed version.**

## What it is
Cl0p (Lace Tempest) exploited an unauthenticated SQL injection in Progress MOVEit Transfer as a zero-day, stealing files from thousands of organisations through their managed file transfer servers. Progress shipped three rounds of fixes in June 2023 as more SQL injection bugs were found.

Severity detail: CVSS 9.8 (NVD), zero-day, actively exploited (CISA KEV), known ransomware/extortion use

- Product: Progress MOVEit Transfer
- CVE / advisory ids: CVE-2023-34362, CVE-2023-35036, CVE-2023-35708

## Affected versions
- CVE-2023-34362: before 2021.0.6 (13.0.6), 2021.1.4 (13.1.4), 2022.0.4 (14.0.4), 2022.1.5 (14.1.5), 2023.0.1 (15.0.1) (NVD)
- CVE-2023-35036: before 2021.0.7 (13.0.7), 2021.1.5 (13.1.5), 2022.0.5 (14.0.5), 2022.1.6 (14.1.6), 2023.0.2 (15.0.2) (NVD)
- CVE-2023-35708: before 2021.0.8 (13.0.8), 2021.1.6 (13.1.6), 2022.0.6 (14.0.6), 2022.1.7 (14.1.7), 2023.0.3 (15.0.3) (NVD)

## Check whether you're affected
No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above.

## Fix
Upgrade to one of these fixed versions (or later on the same branch):
- 2021.0.8 (13.0.8)
- 2021.1.6 (13.1.6)
- 2022.0.6 (14.0.6)
- 2022.1.7 (14.1.7)
- 2023.0.3 (15.0.3)
- Older branches: see vendor advisory

After upgrading, re-run the checks above and redeploy/restart the affected services.

## Latest updates
- Jun 16, 2023: Third round of fixes for CVE-2023-35708 after a public proof of concept
- Jun 9, 2023: Progress fixes more SQL injection bugs found during code review (CVE-2023-35036)
- Jun 7, 2023: CISA and FBI publish joint advisory AA23-158A attributing the campaign to the Cl0p ransomware gang (TA505)
- Jun 2, 2023: CISA adds CVE-2023-34362 to the KEV catalog
- May 31, 2023: Progress discloses the critical MOVEit Transfer vulnerability and ships patches
- May 27, 2023: Earliest exploitation of the MOVEit Transfer zero-day seen by Mandiant

## Advisories
- [MOVEit Transfer Critical Vulnerability (May 2023)](https://community.progress.com/s/article/MOVEit-Transfer-Critical-Vulnerability-31May2023) (Progress)
- [#StopRansomware: CL0P Ransomware Gang Exploits CVE-2023-34362 MOVEit Vulnerability (AA23-158A)](https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-158a) (CISA)
- [NVD: CVE-2023-34362](https://nvd.nist.gov/vuln/detail/CVE-2023-34362) (NVD)
- [NVD: CVE-2023-35036](https://nvd.nist.gov/vuln/detail/CVE-2023-35036) (NVD)
- [NVD: CVE-2023-35708](https://nvd.nist.gov/vuln/detail/CVE-2023-35708) (NVD)
- [CISA Known Exploited Vulnerabilities Catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (CISA)

## Write-ups & news
- [Zero-Day Vulnerability in MOVEit Transfer Exploited for Data Theft](https://cloud.google.com/blog/topics/threat-intelligence/zero-day-moveit-data-theft)

## Caveats
Victim disclosures continued for months after the fixes; closedAt marks the last vendor fix. Exploitation start per Mandiant.

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Machine-readable: https://pwn.watch/i/moveit-transfer-cl0p-mass-exploitation-2023.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.