Proxmox Backup Server 3 · Version Status
Proxmox Backup Server 3 End of Life Date
Proxmox Backup Server 3 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Proxmox Backup Server 3 reaches end of life on August 31, 2026. Plan your migration now — 55 days remaining.
📅 Get reminded before Proxmox Backup Server 3 reaches EOL on August 31, 2026 — alerts 90, 30 & 7 days out.
EOL Date
Aug 31, 2026
55 days remaining
Latest Release
3.4
Standard release
Release Date
Jun 28, 2023
Proxmox Backup Server 3 series
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Proxmox Backup Server 3 support is available
Commercial vendors offer security patches beyond EOL — compare your options.
Compare Options →
All Proxmox Backup Server Versions
| Version | Latest | EOL Date | Status |
|---|
| 1 |
1.1 |
Sep 30, 2022 |
EOL |
| 2 |
2.4 |
Jul 31, 2024 |
EOL |
| → 3 |
3.4 |
Aug 31, 2026 |
Warning |
| 4 |
4.2 |
EOL |
Active |
What does Proxmox Backup Server 3 end of life mean?
When Proxmox Backup Server 3 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Proxmox Backup Server 3 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Proxmox Backup Server 4 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Proxmox Backup Server 3 reach end of life?
Proxmox Backup Server 3 reached end of life on August 31, 2026. That is 55 days remaining.
Is Proxmox Backup Server 3 still supported?
Proxmox Backup Server 3 is still supported but approaching end of life on August 31, 2026. Begin planning your migration now.
What should I upgrade to from Proxmox Backup Server 3?
The recommended upgrade from Proxmox Backup Server 3 is
Proxmox Backup Server 4 — the latest actively supported version. Check the
Proxmox Backup Server full timeline for all supported versions.
What are the security risks of running Proxmox Backup Server 3 past EOL?
When Proxmox Backup Server 3 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Proxmox Backup Server should migrate immediately or implement compensating controls.