Advisory on CVE-2023-45248

Local privilege escalation due to DLL hijacking

On October 9, 2023, Acronis disclosed another vulnerability in its Acronis Agent for Windows. The vulnerability can be fixed by upgrading to build version 36497.

Impacted IONOS Cloud Products

Product RangesProductImpactedMitigatedPatch Status

Managed Services

Backup Service


Not applicable

Not applicable

Managed Services

Acronis Agent for Windows



Will be available in late November

What action has IONOS Cloud taken to mitigate the severity?

The IONOS Cloud team constantly communicates with Acronis and will soon allow customers to download the patched Windows agent. Acronis has ensured no active sign of exploitation, and IONOS Cloud customer backups do not have an impact due to this vulnerability. For more information, see Acronis Cyber Protect Cloud Agent update C23.10.

IONOS Cloud will publish the non-vulnerable versions of agents when Acronis shares the information, estimated to be by the end of November 2023.

How can I get help?

If you have further questions or concerns about this vulnerability, contact IONOS Cloud Support.

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