Firebox T55
Firebox-T55
Chassis
· Firebox Series
T145.
Is the Firebox T55 still supported?
No. WatchGuard ended support for the Firebox T55 on 2025-12-31. No further security fixes will be issued. See WatchGuard's lifecycle bulletin.
When does the Firebox T55 reach end of support?
WatchGuard support for the Firebox T55 ends on 2025-12-31.
What replaces the Firebox T55?
WatchGuard lists multiple successors: Firebox T125, T145.
What known-exploited CVEs apply to the Firebox T55 past end of support?
4 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform the Firebox T55 runs. These will not be patched on this device because it is past the WatchGuard security-support date. See the Known Exploited Vulnerabilities table below for the full list.
T145
Known Exploited Vulnerabilities
This device is past WatchGuard's security-support date. 4 CVEs in CISA's Known Exploited Vulnerabilities catalog apply to the platform it runs. WatchGuard is not issuing patches for this model. Isolate, compensate, or refresh.
| CVE | KEV added | Vulnerability | Flags |
|---|---|---|---|
CVE-2025-14733
|
WatchGuard Firebox Out of Bounds Write Vulnerability | ||
CVE-2025-9242
|
WatchGuard Firebox Out-of-Bounds Write Vulnerability | ||
CVE-2022-23176
|
WatchGuard Firebox and XTM Privilege Escalation Vulnerability | ||
CVE-2022-26318
|
WatchGuard Firebox and XTM Appliances Arbitrary Code Execution |
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.
Firebox T55 Lifecycle Overview
The WatchGuard Firebox T55 (Firebox-T55)
is a chassis
product in the WatchGuard Firebox series.
This product has reached end of life as of ,
meaning WatchGuard no longer provides technical support, software updates, or hardware replacement for this product.
It was last available for purchase on .
Organizations still running the Firebox T55 should plan a migration
to Firebox T125, T145.
Lifecycle Milestones
| End of sale | 5y 7mo ago | |
|---|---|---|
| Last date of support | 7mo ago |