What is CVE-2026-28721?

CVE-2026-28721 is a high-severity vulnerability in Acronis Cyber Protect 17, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 7.3/10. Published 2026-03-05.

How severe is CVE-2026-28721?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Acronis Cyber Protect 17

CVE-2026-28721

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

EPSS: 0.000 (0.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Acronis Cyber Protect 17 — versions unspecified

Weakness classification (CWE)

CWE-610 — Externally Controlled Reference to a Resource in Another Sphere

References

SEC-8445 (vendor-advisory)

Frequently asked questions

What is CVE-2026-28721?: CVE-2026-28721 is a high-severity vulnerability in Acronis Cyber Protect 17, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 7.3/10. Published 2026-03-05.
How severe is CVE-2026-28721?: High severity. CVSS v3 base score is 7.3 out of 10.