CVE-2026-19820 — Backblaze Client for Windows Improper Link Resolution 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…
Published: 2026-09-01 · CVSS: 5.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7