Vulnerability Description
A vulnerability in the Backblaze Client allows a local user to make the system not bootable by creating a link from Backblaze's folder to Windows OS system files during a backup. Successful exploitation requires an administrator-level system change that results in the absence of specific Windows OS security controls. This vulnerability is due to improper link resolution.
Related Weaknesses (CWE)
References
- https://www.backblaze.com/computer-backup/docs/backup-client-release-notes-windo
- https://www.backblaze.com/status/update
FAQ
What is CVE-2026-19820?
CVE-2026-19820 is a documented vulnerability. A vulnerability in the Backblaze Client allows a local user to make the system not bootable by creating a link from Backblaze's folder to Windows OS system files during a backup. Successful exploitati...
How severe is CVE-2026-19820?
CVSS scoring is not yet available for CVE-2026-19820. Check NVD for updates.
Is there a patch for CVE-2026-19820?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.