SonicWall Email Security appliances ES 4300 · Version Status
SonicWall Email Security appliances ES 4300 End of Life Date
SonicWall Email Security appliances ES 4300 end-of-life date, support status, and CVE risk. Dates read at the vendor's own lifecycle pages (sonicwall.com); the source of each date is on the product page.
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SonicWall Email Security appliances ES 4300 is past end of life. This version no longer receives security patches. 2399 days past EOL — migrate to a supported version immediately.
EOL Date
Apr 1, 2020
2399 days past EOL
Latest Release
ES 4300
Standard release
Release Date
—
SonicWall Email Security appliances ES 4300 series
Where these dates come from
End of lifeApr 1, 2020Our catalog, built from the vendor pages · sonicwall.commedium · 1 source agrees End of active supportApr 1, 2018Our catalog, built from the vendor pages · sonicwall.commedium · 1 source agrees Confidence: high = two or more independent sources agree (the vendor's page read by our adapter, a person's check against the vendor, the dataset the date came from); medium = one; low = the vendor page disagrees or our last read is stale.
How we source dates.
Lifecycle detail
It has been past its end-of-life date for 6 years and 7 months.
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 SonicWall Email Security appliances ES 4300 support options
Some vendors and third parties sell security patches beyond end of life; whether one covers this version varies. Compare your options.
Compare Options →
All SonicWall Email Security appliances Versions
| Version | Latest | EOL Date | Status |
|---|
| ES 8000 |
ES 8000 |
Apr 10, 2014 |
EOL |
| ES 400 |
ES 400 |
Jan 1, 2015 |
EOL |
| ES 200 |
ES 200 |
Jan 1, 2015 |
EOL |
| ES 6000 |
ES 6000 |
May 1, 2016 |
EOL |
| ES 500 |
ES 500 |
May 1, 2016 |
EOL |
| ES 300 |
ES 300 |
May 1, 2017 |
EOL |
| ES 8300 |
ES 8300 |
Apr 1, 2020 |
EOL |
| → ES 4300 |
ES 4300 |
Apr 1, 2020 |
EOL |
What does SonicWall Email Security appliances ES 4300 end of life mean?
When SonicWall Email Security appliances ES 4300 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 SonicWall Email Security appliances ES 4300 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to SonicWall Email Security appliances ES 5000 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does SonicWall Email Security appliances ES 4300 reach end of life?
SonicWall Email Security appliances ES 4300 reached end of life on April 1, 2020. This version is no longer receiving security patches.
Is SonicWall Email Security appliances ES 4300 still supported?
No. SonicWall Email Security appliances ES 4300 reached end of life on April 1, 2020 and is no longer receiving security patches.
What should I upgrade to from SonicWall Email Security appliances ES 4300?
The recommended upgrade from SonicWall Email Security appliances ES 4300 is
SonicWall Email Security appliances ES 5000 — the latest actively supported version. Check the
SonicWall Email Security appliances full timeline for all supported versions.
What are the security risks of running SonicWall Email Security appliances ES 4300 past EOL?
Since SonicWall Email Security appliances ES 4300 reached end of life, the maintainers no longer issue 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 SonicWall Email Security appliances should migrate immediately or implement compensating controls.