TRY NOW
book meeting
BACK TO KB LIST

Vulnerability Resolved in Veeam Backup & Replication 12.3.2.4854

KB ID: 4869
Product: Veeam Backup & Replication | 12 | 12.1 | 12.2 | 12.3 | 12.3.1 | 12.3.2
Published: 2026-06-09
Last Modified: 2026-06-09
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.

All vulnerabilities documented in this article were resolved in Veeam Backup & Replication 12.3.2.4854.

This vulnerability does not affect any version 13.x build of Veeam Backup & Replication due to architectural changes starting in version 13.

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

All vulnerabilities disclosed in this article affect Veeam Backup & Replication 12.3.2.4465 and all earlier version 12 builds.

This vulnerability does not affect any version 13.x build of Veeam Backup & Replication due to architectural changes starting in version 13.

Note: Unsupported product versions are not tested, but are likely affected and should be considered vulnerable.

CVE-2026-44963

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

Severity: Critical
CVSS v4 Score: 9.4CVSS: AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: Reported by Sina Kheirkhah [@SinSinology] of WatchTowr.

Note: This vulnerability only impacts domain-joined backup servers.
Veeam Backup & Replication Security Best Practice Guide > Workgroup or Domain?

Solution

These vulnerabilities were fixed starting with the following build:

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.