WatchGuard

CVE-2026-90442: A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to

CVE-2026-90442 Oct 27, 2026 Source: Vendor

A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to crash the certificate management service and potentially execute arbitrary code by sending a specially crafted request.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-90442

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CVE-2026-90442 BR2026-0000-034427 unclaimed

Credited as Cody Sixteen