VULNERABILITY INTELLIGENCE
CVE-2020-8290
CVSS score7.8 HIGH
EPSS probability0.59%
CISA KEVNot currently listed
Published2020-12-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary.
Weakness classification
- CWE-269: Improper Privilege Management
Primary references
- support@hackerone.com — Exploit, Third Party Advisory
- support@hackerone.com — Permissions Required
- support@hackerone.com — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Permissions Required
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory