CVEvulnerability
CVE-2020-9451
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-05-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-276
Description
An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe keeps a log in a folder where unprivileged users have write permissions. The logs are generated in a predictable pattern, allowing an unprivileged user to create a hardlink from a (not yet created) log file to anti_ransomware_service.exe. On reboot, this forces the anti_ransomware_service to try to write its log into its own process, crashing in a SHARING VIOLATION. This crash occurs on every reboot.
Affected configurations
• acronis true image 2020 24.5.22510
Related
Weakness · CWE (1)
- CWE-276 Incorrect Default Permissions weakness
References
- https://danishcyberdefence.dk/blog Third Party Advisory
- https://madsjoensen.dk/cve-2020-9451/ Exploit, Third Party Advisory
- https://www.acronis.com Vendor Advisory
- https://danishcyberdefence.dk/blog Third Party Advisory
- https://madsjoensen.dk/cve-2020-9451/ Exploit, Third Party Advisory
- https://www.acronis.com Vendor Advisory