Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 · Version Status
Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 End of Life Date
Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 end-of-life date, support status, and CVE risk. Dates read at the vendor's own lifecycle pages (zyxel.com); the source of each date is on the product page.
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Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 is past end of life. This version no longer receives security patches. 1661 days past EOL — migrate to a supported version immediately.
EOL Date
Mar 31, 2022
1661 days past EOL
Latest Release
1.33(ABHP.7)C0
Standard release
Release Date
—
Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 series
Extended Support
Sep 30, 2023
Extended support · ended
Lifecycle detail
It has been without security patches for 4 years and 7 months.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
20/20 Named in CISA 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 Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
All Zyxel ATP/USG FLEX/USG/ZyWALL/VPN Versions
| Version | Latest | EOL Date | Status |
|---|
| NSG300 |
1.33(ABOS.7)C0 |
Mar 31, 2022 |
EOL |
| NSG200 |
1.33(ABLD.7)C0 |
Mar 31, 2022 |
EOL |
| NSG100 |
1.33(ABEA.7)C0 |
Mar 31, 2022 |
EOL |
| → NSG50 |
1.33(ABHP.7)C0 |
Mar 31, 2022 |
EOL |
| ZyWALL 1100 |
4.73(AAAC.2)C0 |
Dec 31, 2022 |
EOL |
| ZyWALL 310 |
4.73(AAAB.2)C0 |
Dec 31, 2022 |
EOL |
| ZyWALL 110 |
4.73(AAAA.2)C0 |
Dec 31, 2022 |
EOL |
| USG1900 |
4.73(AAPL.2)C0 |
Dec 31, 2022 |
EOL |
What does Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 end of life mean?
When Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 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: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Zyxel ATP/USG FLEX/USG/ZyWALL/VPN ATP100 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 reach end of life?
Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 reached end of life on March 31, 2022. This version is no longer receiving security patches.
Is Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 still supported?
No. Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 reached end of life on March 31, 2022 and is no longer receiving security patches.
What should I upgrade to from Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50?
The recommended upgrade from Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 is
Zyxel ATP/USG FLEX/USG/ZyWALL/VPN ATP100 — the latest actively supported version. Check the
Zyxel ATP/USG FLEX/USG/ZyWALL/VPN full timeline for all supported versions.
What are the security risks of running Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 past EOL?
When Zyxel ATP/USG FLEX/USG/ZyWALL/VPN NSG50 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL Zyxel ATP/USG FLEX/USG/ZyWALL/VPN should migrate immediately or implement compensating controls.