Zyxel USG/ZyWALL/VPN VPN300 · Version Status
Zyxel USG/ZyWALL/VPN VPN300 End of Life Date
Zyxel USG/ZyWALL/VPN VPN300 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
⚠
Zyxel USG/ZyWALL/VPN VPN300 is past end of life. This version no longer receives security patches. 1068 days past EOL — migrate to a supported version immediately.
EOL Date
Sep 30, 2023
1068 days past EOL
Latest Release
5.37(ABFC.2)C0
Standard release
Release Date
—
Zyxel USG/ZyWALL/VPN VPN300 series
Extended Support
Mar 31, 2025
Extended support · ended
Lifecycle detail
It has been without security patches for 2 years and 11 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 USG/ZyWALL/VPN VPN300 support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
All Zyxel 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 USG/ZyWALL/VPN VPN300 end of life mean?
When Zyxel USG/ZyWALL/VPN VPN300 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 Zyxel USG/ZyWALL/VPN VPN300 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Zyxel USG/ZyWALL/VPN USG20-VPN or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Zyxel USG/ZyWALL/VPN VPN300 reach end of life?
Zyxel USG/ZyWALL/VPN VPN300 reached end of life on September 30, 2023. This version is no longer receiving security patches.
Is Zyxel USG/ZyWALL/VPN VPN300 still supported?
No. Zyxel USG/ZyWALL/VPN VPN300 reached end of life on September 30, 2023 and is no longer receiving security patches.
What should I upgrade to from Zyxel USG/ZyWALL/VPN VPN300?
The recommended upgrade from Zyxel USG/ZyWALL/VPN VPN300 is
Zyxel USG/ZyWALL/VPN USG20-VPN — the latest actively supported version. Check the
Zyxel USG/ZyWALL/VPN full timeline for all supported versions.
What are the security risks of running Zyxel USG/ZyWALL/VPN VPN300 past EOL?
When Zyxel USG/ZyWALL/VPN VPN300 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 Zyxel USG/ZyWALL/VPN should migrate immediately or implement compensating controls.