CVE-2026-86104CWE-400CWE-409CWE-770denial-of-service
CVE-2026-86104
High · published September 30, 2026
What it is
An uncontrolled resource consumption vulnerability in the Fireware OS login process (wgagent) allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted request.
The record
Technical detail
- CVSS v3.1
- 7.5 · HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v4.0
- 8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- EPSS
- 0.00362 · 28.8th percentile
- Weaknesses
- CWE-400 · Uncontrolled Resource Consumption; CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification); CWE-770 · Allocation of Resources Without Limits or Throttling
- Published
- 2026-09-30T04:16Z
Affected products (4)
| Product | Versions | Fixed in |
|---|
| watchguard/fireware | ≥ 12.0, < 12.5.21 | 12.5.21 |
| watchguard/fireware | ≥ 12.12, < 12.12.3 | 12.12.3 |
| watchguard/fireware | ≥ 2025.0, < 2026.2.3 | 2026.2.3 |
| watchguard/fireware | ≥ 2026.3, < 2026.3.2 | 2026.3.2 |
References (1)
EPSS history
Timeline