CVE-2026-28717

Local Privilege Escalation via Improper Directory Permissions in Acronis Cyber Protect 17

Published Mar 5, 2026 CVSS 3.0 · 5 Medium EPSS < 1% KEV · Not listed
Description
Local privilege escalation due to improper directory permissions. The following products are affected: Acronis Cyber Protect 17 (Windows) before build 41186.

Analysis

AI-generated

Technical impact

Acronis Cyber Protect 17 on Windows may allow a local user with limited rights to gain administrative privileges by exploiting improperly set directory permissions. This flaw enables the user to modify application files or configuration data, which can lead to execution of arbitrary code or escalation to higher privileges. The weakness corresponds to CWE-276, improper authorization.

Affected Systems

The vulnerability affects Acronis Cyber Protect 17 for Windows in builds prior to 41186. Users running older versions should verify their build number and consider upgrading to a supported release.

Risk and Exploitability

The CVSS score of 5.0 indicates medium severity. The Economics of Security Predictions Service shows a low exploitation probability (<1 %). The vulnerability is not listed in the CISA KEV catalog. While no publicly documented exploit exists, the local attacker requirement means any machine with untrusted local accounts or weak user isolation could be targeted, making timely remediation advisable.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Acronis Cyber Protect 17 to build 41186 or later to obtain the directed permission fix.
  • Verify that installation and data directories are owned by the intended administrative accounts and that write permissions are restricted to users who require them.
  • Implement least‑privilege access controls to prevent non‑administrative local accounts from modifying application files or configurations.

Generated by OpenCVE AI on April 16, 2026 at 11:48 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Local Privilege Escalation via Improper Directory Permissions in Acronis Cyber Protect 17
Type Values Removed Values Added
First Time appeared Acronis cyber Protect
Microsoft
Microsoft windows
CPEs cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Acronis cyber Protect
Microsoft
Microsoft windows
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Acronis
Acronis acronis Cyber Protect 17
Vendors & Products Acronis
Acronis acronis Cyber Protect 17
Type Values Removed Values Added
Description Local privilege escalation due to improper directory permissions. The following products are affected: Acronis Cyber Protect 17 (Windows) before build 41186.
Weaknesses CWE-276
References
Metrics cvssV3_0

{'score': 5, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N'}

Weaknesses
  • CWE-276

    Incorrect Default Permissions

Sources

Status
PUBLISHED
Assigner
Acronis
Published
Updated
Mar 9, 2026, 1:42 PM
Reserved
Mar 3, 2026, 2:29 AM
Status
Analyzed
Published
Mar 6, 2026, 12:16 AM
Modified
Jun 17, 2026, 10:28 AM