A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.
This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
References
| Link | Resource |
|---|---|
| https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004 | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
|
Configuration 2 (hide)
| AND |
|
History
04 Mar 2026, 19:34
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Watchguard firebox Nv5
Watchguard firebox M690 Watchguard firebox T145 Watchguard fireboxv Watchguard firebox T40 Watchguard firebox T25 Watchguard firebox T125 Watchguard firebox M470 Watchguard firebox M570 Watchguard firebox T145-w Watchguard firebox T185 Watchguard firebox M440 Watchguard firebox T70 Watchguard firebox M5800 Watchguard firebox M395 Watchguard firebox M495 Watchguard firebox M590 Watchguard firebox M4800 Watchguard firebox M5600 Watchguard fireware Watchguard firebox M695 Watchguard firebox M370 Watchguard firebox T85 Watchguard firebox M295 Watchguard firebox T20 Watchguard firebox M270 Watchguard firebox T80 Watchguard firebox T55 Watchguard firebox M670 Watchguard firebox M390 Watchguard firebox T45 Watchguard fireboxcloud Watchguard firebox M595 Watchguard firebox T115-w Watchguard firebox T125-w Watchguard firebox M4600 Watchguard Watchguard firebox M290 |
|
| References | () https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004 - Vendor Advisory | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.1 |
| CPE | cpe:2.3:h:watchguard:firebox_m495:-:*:*:*:*:*:*:* cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m470:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t115-w:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t40:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t55:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m595:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m690:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m440:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_nv5:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m5800:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t125:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:fireboxcloud:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m395:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t25:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t85:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t20:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m695:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t145:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m270:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m4800:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m290:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:fireboxv:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m370:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m295:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t185:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t145-w:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m5600:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m390:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m590:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t45:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m670:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m4600:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t80:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t125-w:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_m570:-:*:*:*:*:*:*:* cpe:2.3:h:watchguard:firebox_t70:-:*:*:*:*:*:*:* |
04 Mar 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
03 Mar 2026, 14:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-03 14:15
Updated : 2026-03-04 19:34
NVD link : CVE-2026-3343
Mitre link : CVE-2026-3343
CVE.ORG link : CVE-2026-3343
JSON object : View
Products Affected
watchguard
- fireboxv
- firebox_m395
- firebox_t85
- firebox_m570
- firebox_m690
- firebox_t70
- firebox_t40
- firebox_m4800
- firebox_m495
- firebox_m470
- firebox_m4600
- firebox_m695
- firebox_m5600
- firebox_t125-w
- fireboxcloud
- firebox_t20
- firebox_t185
- firebox_m5800
- fireware
- firebox_m595
- firebox_t80
- firebox_m270
- firebox_m295
- firebox_t25
- firebox_t125
- firebox_m670
- firebox_m440
- firebox_t145
- firebox_t145-w
- firebox_m390
- firebox_m370
- firebox_t45
- firebox_t115-w
- firebox_nv5
- firebox_m590
- firebox_m290
- firebox_t55
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')