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This article describes all security-related fixes and improvements introduced in each release or update of Veeam Backup & Replication. The goal of this article is to provide our customers' security and compliance teams with detailed information on security improvements between releases, in order to help them make an informed decision on whether it is critical to upgrade from their current Veeam Backup & Replication version to a latter one.
13.0.1.180 OpenSSL upgraded to version 3.0.17 Microsoft.IdentityModel.JsonWebTokens upgraded to version 8.12.0 System.Security.Cryptography.Xml upgraded to version 8.0.2 Microsoft.AspNetCore.Server.Kestrel.Core upgraded to version 2.3.6 Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets upgraded to version 2.3.0 13.0.0.4967 Communication protocol was switched to gRPC OpenSSL upgraded to version 3.0.8 Libxml2 upgraded to version 2.13.8 Microsoft.AspNetCore.Server.Kestrel.Core upgraded to version 2.3.0 Newtonsoft.Json upgraded to version 13.0.1 RestSharp upgraded to version 112.1.0 Microsoft.Extensions.Caching.Memory upgraded to version 8.0.1 System.Text.Json upgraded to version 8.0.5 Microsoft.AspNetCore.Identity upgraded to version 2.3.1 12.3.2.4165 CVE-2025-48983 vulnerability was fixed. CVE-2025-48984 vulnerability was fixed. 12.3.2.3617 CVE-2025-23121 vulnerability was fixed. CVE-2025-24286 vulnerability was fixed. Azure.Identity upgraded to version 1.11.4 Microsoft.Identity.Client upgraded to version 4.61.3 Sustainsys.Saml2 upgraded to version 2.11.0 12.3.1.1139 CVE-2025-23120 vulnerability was fixed. 12.3.0.310 curl upgraded to version 8.10.1 Fixed a security flaw that allowed an attacker to intercept credentials during the initial connection to a Proxmox server.Reported by Peter Panholzer. CVE-2024-40717 vulnerability was fixed. CVE-2024-42451 vulnerability was fixed. CVE-2024-42452 vulnerability was fixed. CVE-2024-42453 vulnerability was fixed. CVE-2024-42455 vulnerability was fixed. CVE-2024-42456 vulnerability was fixed. CVE-2024-42457 vulnerability was fixed. CVE-2024-45204 vulnerability was fixed. 12.2.0.334 npgsql upgraded to 6.0.11 libxml upgraded to version 2.13.3 curl upgraded to version 8.8.0 CVE-2024-39718 vulnerability was fixed. CVE-2024-40710 vulnerability was fixed. CVE-2024-40711 vulnerability was fixed. CVE-2024-40712 vulnerability was fixed. CVE-2024-40713 vulnerability was fixed. CVE-2024-40714 vulnerability was fixed. 12.1.2.172 PuTTY updated to version 0.81 VMware Virtual Disk Development Kit (VDDK) was updated to 7.0.3.4 to address CVE-2023-38545. Microsoft .NET 6.0.25 was updated to 6.0.29. Microsoft WebView2 was updated to 123.0.2420.81. PostgreSQL installer was updated to 15.6.1. Curl was updated to 8.5. Vulnerability CVE-2024-29849 in Veeam Backup Enterprise Manager was fixed. Vulnerability CVE-2024-29850 in Veeam Backup Enterprise Manager was fixed. Vulnerability CVE-2024-29851 in Veeam Backup Enterprise Manager was fixed. Vulnerability CVE-2024-29852 in Veeam Backup Enterprise Manager was fixed. 12.1.1.56 PuTTY updated to version 0.80 12.1.0.2131 OpenSSL library updated to 1.0.2zi LZ4 library updated to 1.9.4 curl updated to 8.0.1 Azure Identity package updated to 1.10.2 Stronger backup encryption (see What's New in 12.1 p.7) Enhanced protection for stored credentials (see What's New in 12.1 p.7) 12.0.0.1420 P20230412 OpenSSL Library updated to the newest version (1.0.2zg). 12.0.0.1420 P20230223 Vulnerability (CVE-2023-27532) in Veeam Backup Service was fixed.This vulnerability was reported by Shanigen. 12.0.0.1420 Added support for networks with NTLM authentication disabled (Kerberos-only authentication). Added Best Practices Analyzer to check product configuration. Audit capabilities were improved. Added possibility to limit the number of logon sessions per user and to log off users after an inactivity period SMTP certificates validation was added for email notifications Network communication between CDP components is encrypted with TLS Disabled insecure TLS protocols in communication with VMware infrastructure zlib has been updated to version 1.2.13 OpenSSL version has been updated to 1.0.2ze Putty has been updated to version 0.76 11.0.1.1261 P20240304 VMware Virtual Disk Development Kit (VDDK) was updated to 7.0.3.4. OpenSSL was updated to v1.0.2zi. liblz4 was updated to v1.9.4. zlib was updated to v1.2.13. PuTTY was updated to 0.80. 11.0.1.1261 P20230227 Vulnerability (CVE-2023-27532) in Veeam Backup Service was fixed.This vulnerability was reported by Shanigen. 11.0.1.1261 P20220302 Vulnerabilities (CVE-2022-26500, CVE-2022-26501) in Veeam Distribution Service were fixed.These vulnerabilities were reported by Nikita Petrov (Positive Technologies). Vulnerability (CVE-2022-26504) in Veeam.Backup.PSManager was fixed. Vulnerability (CVE-2022-26503) in Veeam Agent for Microsoft Windows was fixed.This vulnerability was reported by Nikita Petrov (Positive Technologies). 11.0.1.1261 Linux data mover: Added support for ECDHE TLS cipher suites; improved transport security. Veeam Backup Enterprise Manager: hardened HTTP header configuration; disabled HTTP Trace method; restricted an ability to log into the Self-Service Restore Portal under NETWORK SERVICE accounts (the portal was dysfunctional for such logins). Helper appliances: updated OpenVPN to version 2.4.11; updated OpenSSH to version 8.6. Debug logs: Addressed issues which could result in sensitive information logged under certain circumstances. 11.0.0.837 P20210507 Vulnerability (CVE-2021-35971) in the deserialization logic of Microsoft .NET remoting has been fixed. 11.0.0.837 .NET remoting communication security has been improved. Data Mover communication protocol security has been improved. Agent Management architecture security has been improved. Veeam Explorers integration security has been improved Veeam Backup Enterprise Manager Web App configuration and headers security has been improved. Addressed issues which could cause sensitive information logged in certain circumstances. Third-party libraries in FLR and SureBackup helper appliance have been updated to current versions. Sustansys.Saml2 has been updated to version 2.7 to address known vulnerabilities. LZ4 compression library version has been updated to version 1.9.2 10.0.1.4854 P20220304 Vulnerabilities (CVE-2022-26500, CVE-2022-26501) in Veeam Distribution Service were fixed.These vulnerabilities were reported by Nikita Petrov (Positive Technologies). Vulnerability (CVE-2022-26504) in Veeam.Backup.PSManager was fixed. Vulnerability (CVE-2022-26503) in Veeam Agent for Microsoft Windows was fixed.This vulnerability was reported by Nikita Petrov (Positive Technologies). 10.0.1.4854 P20210609 Vulnerability (CVE-2021-35971) in the deserialization logic of Microsoft .NET remoting has been fixed. 10.0.1.4854 NAS Backup functionality can be used to gain unprivileged access to files on managed servers. Weak credentials encryption issue in guest processing command line parameter and in PowerShell cmdlet logs. Server and IIS version information is included in the response header of the Veeam Backup Enterprise Manager web app. Security of Agent Management architecture has been improved. Security of Cloud Connect architecture has been improved. libcurl version has been updated to 7.70 10.0.0.4461 A custom security descriptor was provided for the driver's control device (vulnerability reported by Mile Karry). Deserialization issues were fixed (vulnerability reported by Harrison Neal). A user authorization issue was fixed (vulnerability reported by Harrison Neal). Security of the Enterprise Manager Web App configuration was improved. Support for weak SSH ciphers was disabled in the recovery media ISOs. OpenSSL library was updated to version 1.0.2t Putty was updated to version 0.73 Weak TLS ciphers were disabled in the Surebackup Linux appliance.
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