High severity · published Jul 2, 2026
CVE-2026-13384
WatchGuard Firebox wgagent Out of Bounds Write Vulnerability
7.2
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fireware OS · WatchGuard
2025.1 before 2026.2.1; 12.1 before 12.12.1; 12.1 before 12.11.9; 12.1 before 12.5.19 · source: vendor
FI
Fireware · Watchguard
12.1 before 12.12.1; 2025.1 before 2026.2.1; 12.5 through 12.5.18 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13384
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13384
psirt.watchguard.com
https://psirt.watchguard.com/CVE-2026-13384
Vendor Advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00021
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