PatchTheCVECVE-2020-6627: The web-management application on Seagate Central NAS STCG2000300, STCG3000300, and STCG4000300 devices allows
CVE-2020-6627 is a critical-severity flaw (CVSS 9.8) affecting stcg2000300 firmware, stcg3000300 firmware, stcg4000300 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The web-management application on Seagate Central NAS STCG2000300, STCG3000300, and STCG4000300 devices allows OS command injection via mv_backend_launch in cirrus/application/helpers/mv_backend_helper.php by leveraging the "start" state and sending a check_device_name request.
Why this priority
- Critical severity
- EPSS top 4%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 12.7% (top 4%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2022-12-06 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: Seagate Central Storage 2015.0916 - Unauthenticated Remote Command Execution (Metasploit)
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-6627?
stcg2000300 firmware: mitigate or apply the listed mitigation; stcg3000300 firmware: mitigate or apply the listed mitigation; stcg4000300 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2020-6627 being exploited?
CVE-2020-6627 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-6627 affect?
CVE-2020-6627 affects stcg2000300 firmware, stcg3000300 firmware, stcg4000300 firmware. Severity is critical (CVSS 9.8). The web-management application on Seagate Central NAS STCG2000300, STCG3000300, and STCG4000300 devices allows OS command injection via mv_backend_launch in cirrus/application/helpers/mv_backend_helper.php by leveraging the "start" state an
How urgent is CVE-2020-6627?
Priority 68/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action