High severity · published Jul 2, 2026
CVE-2026-13050
WatchGuard Firebox networkd Out of Bounds Write Vulnerability
7.2
CVSS
0.6%
EPSS
No
On KEV
Description
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS networkd 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)0.6% · higher than 51% 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; 12.0 before 12.12.1; 11.8; 12.0 before 12.11.9; 12.0 before 12.5.19 · source: vendor
FI
Fireware · Watchguard
2025.1 before 2026.2.1; 12.5 before 12.5.19; 11.0.0 before 11.12.4; 11.12.4; 11.12.4; 12.0 before 12.12.1 · source: NVD
In the news
VulnerabilityHigh
ZDI-26-500: WatchGuard FireWare OS networkd network_wireless_kick_off_user_cb Stack-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of WatchGuard FireWare OS. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-13050.
Jul 29, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13050
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13050
Broken Link
https://psirt.watchguard.com/CVE-2026-13050
Vendor Advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00029
More from Fireware OS
9.8
CVE-2025-14733
WatchGuard Firebox iked Out of Bounds Write Vulnerability
9.8
CVE-2025-9242
WatchGuard Firebox iked Out of Bounds Write Vulnerability
9.8
CVE-2026-86131
Fireware OS Code Injection in BOVPN Over TLS Client Allows Remote Code Execution
9.5
CVE-2026-103594
Fireware OS Stack Buffer Overflow in WireGuard Configuration Allows Remote Code Execution
9.4
CVE-2026-90465
Fireware OS Missing Authentication in FireCluster Sync Allows Privilege Escalation