---
title: "CVE-2023-45249: Acronis Cyber Infrastructure (ACI) Insecure Default Password Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-45249/
description: "CVE-2023-45249 (Acronis Cyber Infrastructure (ACI)): Exploited in the wild (CISA KEV). Remote command execution due to use of default passwords. The…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-07-24
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-45249"
kev: true
cvss: 9.8
epss: 0.53255
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-45249: Acronis Cyber Infrastructure (ACI) Insecure Default Password Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Acronis Cyber Infrastructure (ACI). CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-07-29, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-08-19 ; treat that as the outer limit, not the target.
- EPSS 53.3% , percentile 99: FIRST’s model estimates a 53.3% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

Remote command execution due to use of default passwords. The following products are affected: Acronis Cyber Infrastructure (ACI) before build 5.0.1-61, Acronis Cyber Infrastructure (ACI) before build 5.1.1-71, Acronis Cyber Infrastructure (ACI) before build 5.2.1-69, Acronis Cyber Infrastructure (ACI) before build 5.3.1-53, Acronis Cyber Infrastructure (ACI) before build 5.4.4-132.

## Affected products (CVE record)

- Acronis Acronis Cyber Infrastructure: unspecified < 5.0.1-61
- Acronis Acronis Cyber Infrastructure: unspecified < 5.1.1-71
- Acronis Acronis Cyber Infrastructure: unspecified < 5.2.1-69
- Acronis Acronis Cyber Infrastructure: unspecified < 5.3.1-53
- Acronis Acronis Cyber Infrastructure: unspecified < 5.4.4-132

## Severity

- Acronis CVSS 3.0: 9.8 `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2024-07-29; federal due date 2024-08-19. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 53.25% probability of exploitation activity in the next 30 days; percentile 99.

## Sources

- [SEC-6452](https://security-advisory.acronis.com/advisories/SEC-6452)
- [CVE.org record CVE-2023-45249](https://www.cve.org/CVERecord?id=CVE-2023-45249)
- [NVD entry CVE-2023-45249](https://nvd.nist.gov/vuln/detail/CVE-2023-45249)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-45249)
- [securityweek.com](https://www.securityweek.com/acronis-product-vulnerability-exploited-in-the-wild/)

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Source page: https://erroneo.us/security/cve/CVE-2023-45249/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt