CVE-2026-19313: CWE-122 in WatchGuard Fireware OS
Description
An heap overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.
CVSS v4.0
Score 9.3critical
Affected software
WatchGuard
Fireware OS
WatchGuard
Fireware OS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-19313) is a heap overflow in the iked process of WatchGuard Fireware OS. An attacker can exploit this remotely without authentication by sending specially crafted network traffic, leading to arbitrary code execution. The flaw is classified under CWE-122 (Heap-based Buffer Overflow). The vulnerability affects multiple version ranges of Fireware OS, including versions >=2025.0 and <2026.2.2, >=12.0 and <12.12.2, >=12.0 and <12.5.20, and >=2026.3 and <2026.3.1. The CVSS 4.0 vector indicates high impact on confidentiality, integrity, and availability with no required privileges or user interaction.
Potential Impact
Successful exploitation allows remote unauthenticated attackers to execute arbitrary code on the affected system, potentially leading to full compromise of the Fireware OS device. This can impact confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or fix links were provided in the input data. Users should monitor WatchGuard advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-08-07T20:05:18.422Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a90ed89acd9273b49475496
Added to database: 08/28/2026, 02:08:09 UTC
Last enriched: 09/14/2026, 23:38:16 UTC
Last updated: 10/10/2026, 18:48:17 UTC
Views: 1078
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