An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user.
Note, this vulnerability does not affect Firebox platforms that do not support the Access Portal feature, including the T15 and T35.
References
| Link | Resource |
|---|---|
| https://psirt.watchguard.com/CVE-2026-4266 | Broken Link |
| https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00007 | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
|
Configuration 2 (hide)
| AND |
|
History
No history.
Information
Published : 2026-03-30 13:16
Updated : 2026-08-28 00:18
NVD link : CVE-2026-4266
Mitre link : CVE-2026-4266
CVE.ORG link : CVE-2026-4266
JSON object : View
Products Affected
watchguard
- firebox_t25
- firebox_t85
- firebox_nv5
- firebox_m495
- firebox_m4600
- firebox_m5800
- firebox_t80
- fireware
- firebox_t20
- firebox_t70
- fireboxv
- firebox_m295
- firebox_m395
- firebox_cloud
- firebox_m695
- firebox_m390
- firebox_m470
- firebox_m270
- firebox_m5600
- firebox_t145-w
- firebox_m590
- firebox_t185
- firebox_t55
- firebox_m595
- firebox_m440
- firebox_t45
- firebox_m670
- firebox_t125-w
- firebox_m370
- firebox_t115-w
- firebox_t145
- firebox_m570
- firebox_t125
- firebox_m690
- firebox_t40
- firebox_m4800
- firebox_m290
CWE
CWE-502
Deserialization of Untrusted Data
