SBG3500-NB
Gateway
· Gateway/Router Series
Is the SBG3500-NB still supported?
No. Zyxel ended support for the SBG3500-NB on 2020-12-28. No further security fixes will be issued. See Zyxel's lifecycle bulletin.
When does the SBG3500-NB reach end of support?
Zyxel support for the SBG3500-NB ends on 2020-12-28.
What replaces the SBG3500-NB?
Zyxel has not published a successor model for the SBG3500-NB.
What known-exploited CVEs apply to the SBG3500-NB past end of support?
2 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform the SBG3500-NB runs. These will not be patched on this device because it is past the Zyxel security-support date. See the Known Exploited Vulnerabilities table below for the full list.
Known Exploited Vulnerabilities
This device is past Zyxel's security-support date. 2 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform it runs. Zyxel is not issuing patches for this model. Isolate, compensate, or refresh.
| CVE | KEV added | Vulnerability | Flags |
|---|---|---|---|
CVE-2024-40891
|
Zyxel DSL CPE OS Command Injection Vulnerability | ||
CVE-2024-40890
|
Zyxel DSL CPE OS Command Injection 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.
SBG3500-NB Lifecycle Overview
The Zyxel SBG3500-NB is a gateway product in the Zyxel Gateway/Router series. This product has reached end of life as of , meaning Zyxel no longer provides technical support, software updates, or hardware replacement for this product. It was last available for purchase on . Organizations still running the SBG3500-NB should plan a migration .
Lifecycle Milestones
| Lifecycle notice published | 8y 1mo ago | |
|---|---|---|
| End of sale | 7y 10mo ago | |
| Last date of support | 5y 10mo ago |