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.
History

Wed, 30 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 29 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
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.
Title Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Execution
First Time appeared Watchguard
Watchguard fireware Os
Weaknesses CWE-120
CWE-121
CWE-787
CPEs cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Vendors & Products Watchguard
Watchguard fireware Os
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published: 2026-09-29T23:05:47.399Z

Updated: 2026-10-01T03:55:40.175Z

Reserved: 2026-08-26T19:25:54.228Z

Link: CVE-2026-81433

cve-icon Vulnrichment

Updated: 2026-09-30T15:25:46.997Z

cve-icon NVD

Status : Deferred

Published: 2026-09-30T00:16:36.150

Modified: 2026-10-01T04:18:20.963

Link: CVE-2026-81433

cve-icon Redhat

No data.