---
id: "CVE-2026-87880"
kind: "vulnerability"
aliases: ["CVE-2026-87880"]
title: "Acronis Cyber Protect 17: missing certificate checks expose sensitive data"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["acronis-cyber-protect", "backup", "linux", "other", "windows"]
not_affected_if: ["build-42587-or-later", "not-running-acronis"]
published_at: "2026-10-28T11:17:28+00:00"
first_seen_at: "2026-10-28T11:32:34+00:00"
updated_at: "2026-10-28T11:33:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87880", "first_seen_at": "2026-10-28T11:32:34+00:00"}]
---

# Acronis Cyber Protect 17: missing certificate checks expose sensitive data

One component of Acronis Cyber Protect 17 does not verify SSL certificates when connecting. A network attacker positioned between the agent and its server could read sensitive information sent over those connections.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Confirm the installed Acronis Cyber Protect 17 build number; unknown whether the sources give a command for this.
- Review which component is named in the advisory; unknown from the sources.

## Fix

- Update Acronis Cyber Protect 17 to build `42587` or later, per the advisory's affected range.

## Timeline

- 2026-10-28T11:32:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-87880

## From the sources

Sensitive information disclosure due to missing SSL certificate verification affecting one component. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 42587.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_