---
title: "CVE-2026-87103: Acronis Cyber Protect 17 - Authentication Bypass"
description: "Acronis Cyber Protect 17 < 42587 contains an improper token validation vulnerability causing sensitive information disclosure and data manipulation, letting attackers access and modify data, exploit requires crafted token."
url: https://panop.io/threat-heartbeat/CVE-2026-87103/
---

# CVE-2026-87103 Acronis Cyber Protect 17 - Authentication Bypass

Acronis Cyber Protect 17 < 42587 contains an improper token validation vulnerability causing sensitive information disclosure and data manipulation, letting attackers access and modify data, exploit requires crafted token.

CVSS base score 7.4 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-87103)

## Details

Type

Authentication Bypass

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Published

28 October 2026

Updated

29 October 2026

Weakness

[CWE-347](https://cwe.mitre.org/data/definitions/347.html)

## Vendor fix

Update to build 42587 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-87103](https://nvd.nist.gov/vuln/detail/CVE-2026-87103)
- [https://security-advisory.acronis.com/advisories/SEC-9814](https://security-advisory.acronis.com/advisories/SEC-9814)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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