What is CVE-2021-38086?

CVE-2021-38086 is a high-severity vulnerability in Acronis Cyber Protect, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-08-12.

How severe is CVE-2021-38086?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Acronis Cyber Protect

CVE-2021-38086

Acronis Cyber Protect 15 for Windows prior to build 27009 and Acronis Agent for Windows prior to build 26226 allowed local privilege escalation via DLL hijacking.

Published 2021-08-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (15.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Acronis Cyber Protect — versions 15
Microsoft Windows

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

kb.acronis.com/content/68564 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-38086?: CVE-2021-38086 is a high-severity vulnerability in Acronis Cyber Protect, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-08-12.
How severe is CVE-2021-38086?: High severity. CVSS v3 base score is 7.8 out of 10.