CVE-2026-28709Network attack vector

Authenticated resource modification via incorrect authorization checks

Published Mar 5, 2026 · Updated Mar 5, 2026

Incorrect authorization in Acronis Cyber Protect 17 before build 41186 allows remote authenticated users to modify protected resources. Acronis has not disclosed the affected component or the incorrect operation performed by its authorization check. A low-privileged account can reach the flaw over the network without user interaction; the documented consequence is limited to resource modification.

CVSS severity4.3
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect authorization in Acronis Cyber Protect 17 before build 41186 allows remote authenticated users to modify protected resources. Acronis has not disclosed the affected component or the incorrect operation performed by its authorization check. A low-privileged account can reach the flaw over the network without user interaction; the documented consequence is limited to resource modification.

The record

CVE
CVE-2026-28709
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
Acronis
Product
Acronis Cyber Protect
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <41186

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Acronis · Acronis Cyber Protectversion=unspecified <41186

Published CVSS scores

4.3Acronis International GmbHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo