SonicWall Network Security Manager (NSM) On-Prem End of Life (EOL) Dates & Support Timeline
Complete end-of-life dates, support windows, and security status for all SonicWall Network Security Manager (NSM) On-Prem versions. Dates read at the vendor's own lifecycle pages (sonicwall.com). Updated at every deploy.
SonicWall Network Security Manager (NSM) On-Prem 4.2.0 is supported until June 23, 2027, its end-of-support date. Active support for SonicWall Network Security Manager (NSM) On-Prem 4.2.0 ends on December 23, 2026. The next SonicWall Network Security Manager (NSM) On-Prem version to reach end of life is 4.0.0, on October 30, 2026. 12 of 18 tracked SonicWall Network Security Manager (NSM) On-Prem versions are past end of life; the most recent to reach it, 3.1.1, did so on October 1, 2026. The full SonicWall Network Security Manager (NSM) On-Prem lifecycle, with every version's release and end-of-support date, is in the table below.
Running an EOL version? Get matched with support options — free ↓| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 2.3.2 | 2.3.2 | Dec 1, 2021 | Jun 1, 2023 | 1228 days past EOL | EOL |
| 2.3.3-4 | 2.3.3-4 | Mar 29, 2022 | Sep 29, 2023 | 1108 days past EOL | EOL |
| 2.3.4-1 | 2.3.4-1 | Nov 14, 2022 | Jun 14, 2024 | 849 days past EOL | EOL |
| 2.3.4-6 | 2.3.4-6 | Oct 5, 2023 | Oct 5, 2024 | 736 days past EOL | EOL |
| 2.3.5-1 | 2.3.5-1 | Nov 29, 2023 | Nov 29, 2024 | 681 days past EOL | EOL |
| 2.4.0 | 2.4.0 | May 29, 2024 | May 29, 2025 | 500 days past EOL | EOL |
| 2.4.4 | 2.4.4 | Aug 27, 2024 | Aug 27, 2025 | 410 days past EOL | EOL |
| 2.5.0 | 2.5.0 | Sep 16, 2024 | Sep 16, 2025 | 390 days past EOL | EOL |
| 2.6.0 | 2.6.0 | Dec 17, 2024 | Dec 17, 2025 | 298 days past EOL | EOL |
| 3.0.0 | 3.0.0 | Apr 29, 2025 | Apr 29, 2026 | 165 days past EOL | EOL |
| 3.1.0 | 3.1.0 | Aug 5, 2025 | Aug 5, 2026 | 67 days past EOL | EOL |
| 3.1.1 | 3.1.1 | Oct 1, 2025 | Oct 1, 2026 | 10 days past EOL | EOL |
| 3.2.0 | 3.2.0 | Dec 18, 2025 | Oct 30, 2026 | 19 days remaining | Warning |
| 3.2.1 | 3.2.1 | Jan 15, 2026 | Oct 30, 2026 | 19 days remaining | Warning |
| 3.5.0 | 3.5.0 | Feb 23, 2026 | Oct 30, 2026 | 19 days remaining | Warning |
| 4.0.0 | 4.0.0 | Apr 28, 2026 | Oct 30, 2026 | 19 days remaining | Warning |
| 4.1.0 | 4.1.0 | May 26, 2026 | Nov 26, 2027 | 411 days remaining | Active |
| 4.2.0 | 4.2.0 | Jun 23, 2026 | Jun 23, 2027 | 255 days remaining | Active |
Live EOL badge for your README — updates automatically at every build.
[](https://endoflife.ai/sonicwall-nsm)
SonicWall Network Security Manager (NSM) On-Prem lifecycle status — the real story
SonicWall Network Security Manager (NSM) On-Prem is the on-premises firewall management server for SonicWall firewalls (the successor to GMS), delivered as a virtual appliance. Lifecycle from the Network Security Manager (NSM) On-Prem software table of SonicWall's own Product Life Cycle Tables page (read 2026-10-11). Mapping, as for the SonicWall Email Security page: releaseDate = Software Release Date, support = Limited Support Date, eol = Support Discontinued Date; the release type (FR feature release, MR maintenance release) is carried as an extra field. SonicWall's definition: Limited Support means support is available for this release/version, and we will use best efforts to provide known workarounds or fixes; End of Support means support is no longer available for this release/version. All 18 versioned rows are included, from 2.3.2 (December 2021) through 4.2.0 (released 2026-06-23).
The dates that matter now. NSM 3.2.0, 3.2.1, 3.5.0 and 4.0.0 all reach Support Discontinued on October 30, 2026; 3.1.1 ended on October 1, 2026 and 3.1.0 on August 5, 2026; 3.0.0 ended on April 29, 2026 and every 2.x release by December 17, 2025. The supported lines are 4.1.0 (Support Discontinued November 26, 2027) and 4.2.0 (June 23, 2027).
Vendor anomaly, not corrected but not served either: the 3.2.0 row prints Limited Support 2025-06-18, six months before its own 2025-12-18 release date (every other row is release plus six months, so 2026-06-18 was evidently meant). The support date is left blank for that row and the vendor value is carried as vendorLimitedSupportDate. Context for the 4.0.0 row: SonicWall prints Limited Support 2026-10-28 and Support Discontinued two days later, 2026-10-30, as published.
SonicWall Network Security Manager (NSM) On-Prem release and support pattern
Of the 18 release lines tracked, 12 are past end of life and 6 are still within support. The newest line, 4.2.0, was released June 23, 2026. The next scheduled end of life is 4.0.0 on October 30, 2026 — 18 days from this build. The longest-supported line currently published is 4.1.0, to November 26, 2027.
Computed from the tracked release data at every build — the figures above are the dates in the table, restated, not an editorial estimate.
What does SonicWall Network Security Manager (NSM) On-Prem end of life mean for your organization?
When a version of SonicWall Network Security Manager (NSM) On-Prem reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: A CVE-based scan does not show the accumulation of unpatched vulnerabilities in EOL software. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no vendor patch is coming. This is one of the most dangerous gaps in enterprise security posture.
Organizations running EOL SonicWall Network Security Manager (NSM) On-Prem should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Your options when SonicWall Network Security Manager (NSM) On-Prem reaches end of life
There are four realistic paths. Which one is right depends far more on how long the system needs to keep running than on the version you are on today.
| Option | Best when | Watch out for |
|---|---|---|
| Move to a supported version | The system will outlive the current version's support window and you can schedule the work | Budget for compatibility testing, not just the upgrade itself — that is where the real cost sits |
| Replace the component | The project is unmaintained, or a better-supported alternative exists | The replacement has its own lifecycle and its own end-of-life date — you are changing vendors, not escaping the problem |
| Buy extended support | Migration is genuinely underway but cannot finish before the deadline, or the workload is frozen by certification or a third-party application | A bridge, not a destination — every year purchased is a year the migration still has to happen |
| Document accepted risk | The system is isolated, short-lived, or scheduled for retirement | Only defensible with real compensating controls and a written decision — auditors treat undocumented end-of-life software as a finding |
How to choose, in one question: how many more years does this system need to run? Under a year, extended support (where it exists) is usually cheaper than an emergency migration. One to three years, migrate — support purchased repeatedly costs more than doing the project once, and the project only gets harder as the version ages. Indefinitely, migrate now and plan the next migration before it surprises you.
Worth saying plainly, because vendors selling extended support rarely will: extended support is often the more expensive choice over a multi-year horizon. It is the right answer when a deadline is genuinely unreachable, not as a default. Compare the annual fee against the one-time cost of migrating before committing to either.
Formalizing decisions like this across your estate? Our free EOL policy template is a ready-to-adopt policy with risk tiers, remediation SLAs, and audit mapping — no signup, free to use and share.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL SonicWall Network Security Manager (NSM) On-Prem versions. This is a bridge, not a permanent solution — plan your migration in parallel.
SonicWall Network Security Manager (NSM) On-Prem has 12 versions past end of life — security patches have stopped, but CVE disclosures haven't. Extended support past the official date exists for many products in this position — whether it exists for SonicWall Network Security Manager (NSM) On-Prem is exactly what we check. Tell us where to reach you and we'll reply with matched options and pricing guidance — or an honest "no vendor covers this."