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CVE-2025-41757

8.8
High
EPSS 0.54%Patch availableMar 9, 2026

Low-priv remote attacker exploits ubr-restore to write arbitrary files with elevated privileges.

common questions

Is CVE-2025-41757 being exploited?

Not confirmed. CVE-2025-41757 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.54% probability of exploitation in the next 30 days.

How severe is CVE-2025-41757?

CVE-2025-41757 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2025-41757?

Yes. A fix has been recorded for CVE-2025-41757. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2025-41757 affect?

CVE-2025-41757 affects UBR ubr-restore backup tool. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2025-41757?

Limit access to ubr-restore; enforce least privilege; monitor backups.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
UBR ubr-restore backup tool
impact

Remote arbitrary file write as elevated user via unvalidated backup archives; risk of privilege escalation and persistence.

action required

Monitor only

affected versions
MBS UBR-01 Mk II
  • affected< 6.0.1.0
MBS UBR-02
  • affected< 6.0.1.0
MBS UBR-LON
  • affected< 6.0.1.0

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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