CVE-2026-19317: CWE-125 in WatchGuard Fireware OS
Description
An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
CVSS v4.0
Score 8.7high
Affected software
WatchGuard
Fireware OS
WatchGuard
Fireware OS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in WatchGuard Fireware OS involves an out-of-bounds read (CWE-125) in the iked process, which handles VPN connections. An attacker without authentication can exploit this flaw remotely by sending crafted network packets, resulting in a denial of service condition that disrupts VPN processing. The CVSS 4.0 base score is 8.7, indicating high severity with network attack vector, no privileges or user interaction required, and high impact on availability. No known exploits in the wild or vendor remediation information are currently available.
Potential Impact
Successful exploitation leads to denial of service in VPN processing on affected WatchGuard Fireware OS devices, potentially disrupting secure communications. The vulnerability does not require authentication or user interaction, increasing its risk. Confidentiality and integrity impacts are not indicated.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, monitor for unusual VPN disruptions and consider limiting exposure of the iked service to untrusted networks if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-08-07T20:06:02.743Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a90ed89acd9273b4947549e
Added to database: 08/28/2026, 02:08:09 UTC
Last enriched: 09/07/2026, 12:52:27 UTC
Last updated: 10/10/2026, 18:48:17 UTC
Views: 74
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.