CRITICAL · CVSS 9.8 CISA Known Exploited Vulnerability

CVE-2023-45249

Acronis Cyber Infrastructure (ACI) Insecure Default Password Vulnerability

Acronis Cyber Infrastructure (ACI)

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.

CVSS

9.8

CRITICAL

EPSS

53.5%

30-day exploitation

Ransomware groups

recorded exploiting

Published

24 Jul 2024

CWE-1393

Exploitation status

CISA Known Exploited Vulnerabilities

Listed by CISA on 29 July 2024. US federal agencies were required to remediate it by 19 August 2024.

EPSS — exploitation probability

FIRST puts the probability of exploitation activity in the next 30 days at 53.5%, which is higher than 99% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Frequently asked questions

Is CVE-2023-45249 being exploited by ransomware groups?

No ransomware group in this database is currently recorded as exploiting CVE-2023-45249.

What does CVE-2023-45249 affect?

CVE-2023-45249 affects Acronis Cyber Infrastructure (ACI). 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.

How severe is CVE-2023-45249?

CVE-2023-45249 is rated CRITICAL with a CVSS base score of 9.8. EPSS puts the probability of exploitation in the next 30 days at 53.5%, higher than 99% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 19 August 2024.

How should organisations respond to CVE-2023-45249?

Apply the vendor patch for Acronis Cyber Infrastructure (ACI) as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.