High Veeam Software Appliance/Veeam Infrastructure Appliance — Updater Component Vulnerability
This high-severity Veeam advisory covers KB4879.
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Summary
Veeam Software Appliance/Veeam Infrastructure Appliance — Updater Component Vulnerability KB ID: 4879 Product: Veeam Backup & Replication | 13 Published: 2026-07-14 Last Modified: 2026-07-14 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. Vulnerability Details A vulnerability in the Veeam Updater component allows a local user to elevate their privileges and gain root-level access to the underlying operating system.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 9 days ago·verify at source
- 12.3.0.65
Official advisory · medium-confidence parse· fetched 9 days ago·verify at source
Mitigation checklist
- When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk.
- 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.
- Automatic Update Deployment — For most users, no action is needed, as the Veeam Updater component installs the fix automatically during its automatic update check.
- For more information about Veeam Appliance Update configuration, review the product user guide:Veeam Backup & Replication User Guide: Updating Veeam Appliances Deployment Verification To verify that the Veeam Updater component has been updated, review the component versions on the Veeam Software Appliance or Veeam Infrastructure Appliance using its Host Management Console: Open the appliance's Host Management Console Web UI.
- Manual Update Deployment — If the Veeam Software Appliance or any Veeam Infrastructure Appliance is unable to reach either repository.veeam.com or a local mirror repository, the fix must be applied manually with assistance from Veeam Support, or temporary internet access to the update server must be configured.
Official advisory · medium-confidence parse· fetched 9 days ago·verify at source
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