SonicWall TZ Series 300
TZ-Series-300
Appliance
· TZ Series
Is the SonicWall TZ Series 300 still supported?
No. SonicWall ended support for the SonicWall TZ Series 300 on 2025-01-23. No further security fixes will be issued. See SonicWall's lifecycle bulletin.
When does the SonicWall TZ Series 300 reach end of support?
SonicWall support for the SonicWall TZ Series 300 ends on 2025-01-23.
What replaces the SonicWall TZ Series 300?
SonicWall has not published a successor model for the SonicWall TZ Series 300.
What known-exploited CVEs apply to the SonicWall TZ Series 300 past end of support?
3 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform the SonicWall TZ Series 300 runs. These will not be patched on this device because it is past the SonicWall security-support date. See the Known Exploited Vulnerabilities table below for the full list.
Known Exploited Vulnerabilities
This device is past SonicWall's security-support date. 3 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform it runs. SonicWall is not issuing patches for this model. Isolate, compensate, or refresh.
| CVE | KEV added | Vulnerability | Flags |
|---|---|---|---|
CVE-2024-53704
|
SonicWall SonicOS SSLVPN Improper Authentication Vulnerability | Ransomware | |
CVE-2024-40766
|
SonicWall SonicOS Improper Access Control Vulnerability | Ransomware | |
CVE-2020-5135
|
SonicWall SonicOS Buffer Overflow Vulnerability |
Source: CISA Known Exploited Vulnerabilities catalog. The Ransomware flag reflects CISA's own knownRansomwareCampaignUse field, set when the CVE has been observed in ransomware campaigns per their threat intel. It's not a property of the vulnerability description itself.
Correlation is at the platform level, not per-OS-version. Not exhaustive: KEV only lists actively-exploited CVEs and many relevant unexploited vulnerabilities are not here. Verify against vendor security advisories (PSIRT, JSA, PAN-SA) and NVD before acting. See compensating controls if refresh isn't immediate.
SonicWall TZ Series 300 Lifecycle Overview
The SonicWall SonicWall TZ Series 300 (TZ-Series-300) is a appliance product in the SonicWall TZ series. This product has reached end of life as of , meaning SonicWall no longer provides technical support, software updates, or hardware replacement for this product. It was last available for purchase on . Organizations still running the SonicWall TZ Series 300 should plan a migration .
Lifecycle Milestones
| Lifecycle notice published | 6y 4mo ago | |
|---|---|---|
| End of sale | 6y 4mo ago | |
| End of software maintenance | 4y 4mo ago | |
| Last date of support | 1y 4mo ago |