#1 Global Leader in Data Resilience
#1 Global Leader in Data Resilience
TRY NOW
book meeting
BACK TO KB LIST

CVE-2025-23120

KB ID: 4724
Product: Veeam Backup & Replication | 12 | 12.1 | 12.2 | 12.3
Published: 2025-03-19
Last Modified: 2025-03-24
mailbox
Get weekly article updates
By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.

Cheers for trusting us with the spot in your mailbox!

Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest

error icon

Oops! Something went wrong.

Please, try again later.

Veeam Software Security Commitment
Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program (VDP) for all Veeam products and perform extensive internal code audits. When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line with our dedication to transparency, we publicly disclose the vulnerability and provide detailed mitigation information. This approach ensures that all potentially affected customers can quickly implement the necessary measures to safeguard their systems. It’s important to note that once a vulnerability and its associated patch are disclosed, attackers will likely attempt to reverse-engineer the patch to exploit unpatched deployments of Veeam software. This reality underscores the critical importance of ensuring that all customers use the latest versions of our software and install all updates and patches without delay.

Issue Details

CVE-2025-23120

A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user.

Severity: Critical
CVSS v3.1 Score: 9.9AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: Reported by Piotr Bazydlo of watchTowr.

Note: This vulnerability only impacts domain-joined backup servers.

Veeam Backup & Replication Security Best Practice Guide > Workgroup or Domain?
Affected Product

Veeam Backup & Replication 12.3.0.310 and all earlier version 12 builds.
Note: Unsupported product versions are not tested, but are likely affected and should be considered vulnerable.

Solution

The vulnerability documented in this section was fixed starting in the following build:
Upgrading to Veeam Backup & Replication 12.3.1 is the recommended way to mitigate this vulnerability. Please click the link above to review the Release Information for Veeam Backup & Replication 12.3.1, download links for the upgrade and update ISOs are provided in the above-linked KB article.

More Information

Vulnerability Hotfix for Veeam Backup & Replication 12.3

For existing deployments of Veeam Backup & Replication 12.3 (build 12.3.0.310), a hotfix to resolve this vulnerability has been developed and is intended for customers who cannot immediately update to version 12.3.1.

For deployments operating of Veeam Backup & Replication lower than 12.3.0.310, please upgrade directly to version 12.3.1.

Note: This hotfix can only be installed if Veeam Backup & Replication 12.3 has no other hotfixes installed, as it may overwrite earlier hotfixes. If other hotfixes for version 12.3 have been installed, the deployment must be updated to 12.3.1.

download hotfix for 12.3

This hotfix is only compatible with Veeam Backup & Replication 12.3 (build 12.3.0.310).

Filename: VeeamBackup&Replication_12.3.0.310_KB4724.zip
MD5: 5185235DEA2AC9F2814638534B16A6DB
SHA1: 4B1C3A7F2F051D958EAF363E2739B1B38C4A4F8C

This hotfix does not change the build number of the software. To validate that the hotfix has been deployed, compare the hash value of the files present on the system with the known hash value of the hotfix files.

  • Veeam.Backup.Common.dll — SHA1: F81B62807D82D9648733B1BF5AD70172B6CB19AA
  • Veeam.Backup.EsxManager.dll — SHA1: 9D72DD7E5CBE920454E7508AAF328CD1A59197E0

The following PowerShell commands can be used to check the SHA1 hash value of a given file.
Note: These commands check the dll in its default location, the path may need to adjusted if Veeam Backup & Replication was installed to a different drive or folder.

Get-FileHash -Path 'C:\Program Files\Veeam\Backup and Replication\Backup\Veeam.Backup.Common.dll' -Algorithm SHA1
Get-FileHash -Path 'C:\Program Files\Veeam\Backup and Replication\Backup\Veeam.Backup.EsxManager.dll' -Algorithm SHA1

If this KB article did not resolve your issue or you need further assistance with Veeam software, please create a Veeam Support Case.

To submit feedback regarding this article, please click this link: Send Article Feedback
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.

Spelling error in text

Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please, try again later.

You have selected too large block!

Please try select less.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case
By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.
Verify your email to continue your product download
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Start using Veeam:
Download the product
&
Activate the license key
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please, try again later.