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.
Metrics
Affected Vendors & Products
References
History
Tue, 01 Sep 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Backblaze
Backblaze backblaze |
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| Vendors & Products |
Backblaze
Backblaze backblaze |
Tue, 01 Sep 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-20 CWE-269 CWE-272 |
Tue, 01 Sep 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Backblaze Client for Windows Improper Link Resolution Vulnerability | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Bugcrowd
Published: 2026-09-01T00:13:03.935Z
Updated: 2026-09-01T15:14:13.872Z
Reserved: 2026-08-14T05:28:19.979Z
Link: CVE-2026-19820
No data.
Status : Received
Published: 2026-09-01T01:16:33.137
Modified: 2026-09-01T16:16:55.223
Link: CVE-2026-19820
No data.