CVE-2026-59104
CRITICAL
INFO
Priority: 0.06
BB Relevance:
79/100
Published: 2026-11-06
Modified: 2026-11-12
First seen: 2026-11-06
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
X
AT:
None
VC:
High
VI:
High
VA:
High
Description
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| SPH Engineering | UgCS | 0 < 6.2 |
| SPH Engineering | UgCS | 0 < 6.2 |
References & Advisories (2)
third-party-advisory
product