Vulnerability in Acronis True Image 2020
CVE-2020-9451
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (29.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Acronis True Image 2020 — versions 24.5.22510
Weakness classification (CWE)
References
- www.acronis.com (Vendor Advisory)
- danishcyberdefence.dk/blog (Third Party Advisory)
- madsjoensen.dk/cve-2020-9451/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-9451?
- CVE-2020-9451 is a medium-severity vulnerability in Acronis True Image 2020, classified under Incorrect Default Permissions. CVSS score: 5.5/10. Published 2021-05-25.
- How severe is CVE-2020-9451?
- Medium severity. CVSS v3 base score is 5.5 out of 10.