CVE-2023-45249: Acronis Cyber Infrastructure (ACI) Insecure Default Password Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 29 Jul 2024, 5 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 53.3%
EPSS score, percentile 99 of all scored records
- How severe?
- 9.8 Critical
CVSS v3.0 base score, given by the CNA
- What should I do?
CISA deadline 19 Aug 2024. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Which versions are affected?
Affected
- before 5.0.1-61
- before 5.1.1-71
- before 5.2.1-69
- before 5.3.1-53
- before 5.4.4-132
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date for this action: 19 August 2024.
Advisories and patches
Linked from CISA's catalog entry
- https://security-advisory.acronis.com/advisories/SEC-6452
- https://nvd.nist.gov/vuln/detail/CVE-2023-45249
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | before 5.0.1-61 |
Versions not listed are: unaffected.
| Status | Versions |
|---|---|
| Affected | before 5.1.1-71 |
Versions not listed are: unaffected.
| Status | Versions |
|---|---|
| Affected | before 5.2.1-69 |
Versions not listed are: unaffected.
| Status | Versions |
|---|---|
| Affected | before 5.3.1-53 |
Versions not listed are: unaffected.
| Status | Versions |
|---|---|
| Affected | before 5.4.4-132 |
Versions not listed are: unaffected.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
Acronis Cyber Infrastructure (ACI) allows an unauthenticated user to execute commands remotely due to the use of default passwords.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2023-45249 to its Known Exploited Vulnerabilities (KEV) catalog on 29 Jul 2024.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 19 Aug 2024.
- The CVE record was published on 24 Jul 2024, 5 days before it was added to KEV.
- The CVE record carries a CVSS v3.0 base score of 9.8 (Critical), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 53.3% (percentile 99), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
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.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 24 Jul 2024 | CVE record published |
| 29 Jul 2024 | Added to CISA KEV |
| 19 Aug 2024 | CISA due date for the required action |
| 21 Oct 2025 | CVE record last updated |
References
More exploited Acronis vulnerabilities
- CVE-2026-87886: Acronis Backup Incorrect Default Permissions Vulnerability