CVE-2026-78008
Received
Received - Intake
Buffer Overflow in WatchGuard Fireware OS Management Web UI
Vulnerability report for CVE-2026-78008, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-28
Last updated on: 2026-08-28
Assigner: WatchGuard Technologies, Inc.
Description
Description
A buffer overflow vulnerability in the WatchGuard Fireware OS Management Web UI allows an authenticated administrator with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| watchguard | fireware_os | to 2026.2.2 (exc) |
| watchguard | fireware_os | to 12.12.2 (exc) |
| watchguard | fireware_os | From 12.0 (inc) to 12.5.20 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
