CVE Watch6 nov 2026

CVE-2026-59104

UgCS server before 6.2 contains an authentication bypass in the HCI protocol login handler (LoginHandler) exposed on TCP port 3334. When the

CVSS

9.8

Crítico

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 6 nov 2026 · Última mod.: 6 nov 2026 · CWE-287

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

UgCS server before 6.2 contains an authentication bypass in the HCI protocol login handler (LoginHandler) exposed on TCP port 3334. When the user database contains exactly one user (the default single-operator installation), a LoginRequest with empty userLogin and userPassword fields is interpreted as \"use the only user\" rather than as invalid credentials, and the server returns a fully authenticated session. Because the service listens on all interfaces (0.0.0.0) without TLS by default, an unauthenticated remote attacker with network access to port 3334 can obtain an authenticated session without knowing any credential and then issue privileged commands, including commanding connected drones and uploading flight routes.

Referencias oficiales

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