CVE-2026-28710Network attack vector

Unauthenticated sensitive data disclosure and manipulation

Published Mar 5, 2026 · Updated Mar 5, 2026

Improper authentication in Acronis Cyber Protect 17 before build 41186 allows remote attackers to disclose and manipulate sensitive data. Acronis has not published the affected component, request flow, or authentication check that improperly accepts untrusted network requests. No credentials or user interaction are required, but exploitation has high complexity and can expose or alter sensitive information on Linux and Windows deployments.

CVSS severity8.1
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Acronis Cyber Protect 17 before build 41186 allows remote attackers to disclose and manipulate sensitive data. Acronis has not published the affected component, request flow, or authentication check that improperly accepts untrusted network requests. No credentials or user interaction are required, but exploitation has high complexity and can expose or alter sensitive information on Linux and Windows deployments.

The record

CVE
CVE-2026-28710
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
Acronis
Product
Acronis Cyber Protect
Classifications
CWE-1390
Attack vector
network
Privileges
unauthenticated

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

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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 privilegesunauthenticated

What is affected?

Acronis · Acronis Cyber Protectversion=unspecified <41186

Published CVSS scores

8.1Acronis International GmbHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1390Weak Authentication

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

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Your stack

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