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CVE-2026-13384 Details
Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS wgagent process could allow an authenticated privileged user to execute arbitrary code via a specially crafted requests to the Management Web UI.
A vulnerability allowing out-of-bounds write has been identified in the WatchGuard Fireware OS wgagent process. This issue could enable an authenticated privileged user to execute arbitrary code by sending specially crafted requests to the Management Web UI. The vulnerability affects Fireware OS versions 12.1 through 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2.
Users on Fireware OS 2025.1 should upgrade to version 2026.2.1. Users on Fireware OS 12.x should upgrade to 12.12.1. For those on Fireware OS 12.5.x (T15 & T35 models), no resolution is currently available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CNA: WatchGuard Technologies, Inc.CVSS-B:8.6 HIGHVector:CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 6, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Total
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://psirt.watchguard.com/CVE-2026-13384 | WatchGuard Technologies, Inc. | |
| https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00021 | WatchGuard Technologies, Inc. | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | WatchGuard Technologies, Inc. |
Affected Products
| Product | Versions |
|---|---|
| watchguard fireware | >= 12.1, < 12.12.1 >= 2025.1, < 2026.2.1 >= 12.5, <= 12.5.18 |
CPE
Remediation
| |
| watchguard firebox m270 | All versions |
CPE
Remediation
| |
| watchguard firebox m290 | All versions |
CPE
Remediation
| |
| watchguard firebox m370 | All versions |
CPE
Remediation
| |
| watchguard firebox m390 | All versions |
CPE
Remediation
| |
| watchguard firebox m440 | All versions |
CPE
Remediation
| |
| watchguard firebox m4600 | All versions |
CPE
Remediation
| |
| watchguard firebox m470 | All versions |
CPE
Remediation
| |
| watchguard firebox m4800 | All versions |
CPE
Remediation
| |
| watchguard firebox m5600 | All versions |
CPE
Remediation
| |
| watchguard firebox m570 | All versions |
CPE
Remediation
| |
| watchguard firebox m5800 | All versions |
CPE
Remediation
| |
| watchguard firebox m590 | All versions |
CPE
Remediation
| |
| watchguard firebox m670 | All versions |
CPE
Remediation
| |
| watchguard firebox m690 | All versions |
CPE
Remediation
| |
| watchguard firebox nv5 | All versions |
CPE
Remediation
| |
| watchguard firebox t20 | All versions |
CPE
Remediation
| |
| watchguard firebox t25 | All versions |
CPE
Remediation
| |
| watchguard firebox t40 | All versions |
CPE
Remediation
| |
| watchguard firebox t45 | All versions |
CPE
Remediation
| |
| watchguard firebox t55 | All versions |
CPE
Remediation
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| watchguard firebox t70 | All versions |
CPE
Remediation
| |
| watchguard firebox t80 | All versions |
CPE
Remediation
| |
| watchguard firebox t85 | All versions |
CPE
Remediation
| |
| watchguard fireboxcloud | All versions |
CPE
Remediation
| |
| watchguard fireboxv | All versions |
CPE
Remediation
| |
| watchguard firebox m295 | All versions |
CPE
Remediation
| |
| watchguard firebox m395 | All versions |
CPE
Remediation
| |
| watchguard firebox m495 | All versions |
CPE
Remediation
| |
| watchguard firebox m595 | All versions |
CPE
Remediation
| |
| watchguard firebox m695 | All versions |
CPE
Remediation
| |
| watchguard firebox t115-w | All versions |
CPE
Remediation
| |
| watchguard firebox t125 | All versions |
CPE
Remediation
| |
| watchguard firebox t125-w | All versions |
CPE
Remediation
| |
| watchguard firebox t145 | All versions |
CPE
Remediation
| |
| watchguard firebox t145-w | All versions |
CPE
Remediation
| |
| watchguard firebox t185 | All versions |
CPE
Remediation
| |
| watchguard firebox t15 | All versions |
CPE
Remediation
| |
| watchguard firebox t35 | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 28, 2026 | CVE Modified | WatchGuard Technologies, Inc. |
| Aug 10, 2026 | CVE Modified | WatchGuard Technologies, Inc. |
| Jul 9, 2026 | Initial Analysis | [email protected] |
| Jul 7, 2026 | CVE Modified | CISA-ADP |
| Jul 6, 2026 | CVE Modified | CISA-ADP |
| Jul 3, 2026 | New CVE Received | WatchGuard Technologies, Inc. |