NetBackup Appliance OS 5.5 · Version Status

NetBackup Appliance OS 5.5 End of Life Date

NetBackup Appliance OS 5.5 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.

NetBackup Appliance OS 5.5 is actively supported. EOL date: TBD.
EOL Date
TBD
Supported
Latest Release
5.5.0.1 MR1
Standard release
Release Date
Jul 31, 2025
NetBackup Appliance OS 5.5 series
← NetBackup Appliance OS 5.3 All NetBackup Appliance OS versions
10 / 100
Low Risk
EOL Risk Score™  How is this calculated? →
EOL Recency
0/40
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 →
All NetBackup Appliance OS Versions
VersionLatestEOL DateStatus
2.7 2.7.3 Oct 1, 2020 EOL
3.0 3.0 Oct 1, 2020 EOL
3.1 3.1.2 Jun 28, 2022 EOL
3.2 3.2 Jun 28, 2023 EOL
3.3 3.3.0.2 MR2 Jul 29, 2024 EOL
4.0 4.0.0.1 MR4 Jan 1, 2024 EOL
4.1 4.1.0.1 MR5 Jun 7, 2024 EOL
5.0 5.0.0.1 MR5 Mar 28, 2025 EOL

What does NetBackup Appliance OS 5.5 end of life mean?

When NetBackup Appliance OS 5.5 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 NetBackup Appliance OS 5.5 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.

Migrate to NetBackup Appliance OS 5.5 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.

Frequently Asked Questions
When does NetBackup Appliance OS 5.5 reach end of life?
NetBackup Appliance OS 5.5 has already reached end of life.
Is NetBackup Appliance OS 5.5 still supported?
Yes, NetBackup Appliance OS 5.5 is currently supported. The EOL date is TBD.
What should I upgrade to from NetBackup Appliance OS 5.5?
The recommended upgrade from NetBackup Appliance OS 5.5 is NetBackup Appliance OS 5.5 — the latest actively supported version. Check the NetBackup Appliance OS full timeline for all supported versions.
What are the security risks of running NetBackup Appliance OS 5.5 past EOL?
When NetBackup Appliance OS 5.5 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 NetBackup Appliance OS should migrate immediately or implement compensating controls.
Data from endoflife.date API · Generated at build time · How we source data →