CVE-2026-81433: CWE-120 in WatchGuard Fireware OS
A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP packet.
CVE-2026-81433: CWE-120 in WatchGuard Fireware OS
Description
A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP packet.
CVSS v4.0
Score 8.7high
Affected software
WatchGuard
Fireware OS
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-08-26T19:25:54.228Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abcb47dc8a85a770df5695b
Added to database: 09/30/2026, 07:04:29 UTC
Last updated: 09/30/2026, 07:04:29 UTC
Views: 1
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
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.