What is CVE-2026-28717?

CVE-2026-28717 is a medium-severity vulnerability in Acronis Cyber Protect 17, classified under Incorrect Default Permissions. CVSS score: 5.0/10. Published 2026-03-06.

How severe is CVE-2026-28717?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Acronis Cyber Protect 17

CVE-2026-28717

Local privilege escalation due to improper directory permissions. The following products are affected: Acronis Cyber Protect 17 (Windows) before build 41186.

Published 2026-03-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Acronis Cyber Protect 17 — versions unspecified
Acronis Cyber Protect
Microsoft Windows

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

security-advisory.acronis.com/advisories/SEC-8363 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28717?: CVE-2026-28717 is a medium-severity vulnerability in Acronis Cyber Protect 17, classified under Incorrect Default Permissions. CVSS score: 5.0/10. Published 2026-03-06.
How severe is CVE-2026-28717?: Medium severity. CVSS v3 base score is 5.0 out of 10.