Veeam has announced patches for a high-severity vulnerability in Backup Enterprise Manager that could be exploited remotely, without authentication.

Tracked as CVE-2024-40715 (CVSS score of 7.7), the bug can be exploited by a remote attacker by performing a man-in-the-middle (MiTM) attack to bypass authentication.

To address this flaw, Veeam has released a hotfix for Backup Enterprise Manager 12.2.0.334 and included the hotfix in repackaged images for Veeam Backup & Replication and Veeam Data Platform that were released on November 6.

Veeam recommends that users apply the hotfix if Backup Enterprise Manager version 12.2.0.334 is already installed, or use the latest Veeam Backup & Replication ISOs to upgrade to the fixed release.

“The hotfix requires the existing Veeam Backup Enterprise Manager deployment to be running 12.2.0.334. You can check which version of Veeam Backup Enterprise Manager is installed by viewing the About section of the Configuration view,” Veeam notes in its advisory.

The company also notes that installing the hotfix will not change the build number of the software and warns that a reboot may be required after the installation.

Users are advised to apply the hotfix as soon as possible. Although Veeam makes no mention of this vulnerability being exploited in the wild, threat actors are known to have targeted Veeam vulnerabilities for which patches have been released.

A fresh example would be CVE-2024-40711 (CVSS score of 9.8), a critical-severity issue in Veeam Backup & Replication that was patched in early September and which started being exploited in Fog and Akira ransomware attacks roughly a month later.

On Friday, Sophos warned that a third ransomware gang, named Frag, has been observed targeting CVE-2024-40711 in recent attacks to create a new user account on vulnerable instances and execute malware.

The cybersecurity firm also noticed a striking similarity in the tactics, techniques and procedures employed by the Frag operators and the threat actors behind Akira and Fog.

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