CVSS 4.0
9.3 criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-59104 sph engineering ugcs: Improper Authentication
Critical (9.3) in sph engineering ugcs. EPSS 0.7% estimated probability of exploitation activity in the next 30 days.
On this page
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.
Severity
CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- EPSS
- 0.7% estimated probability of exploitation activity in the next 30 days; 52nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: yes · Technical impact: total, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-287 Improper Authentication
- OWASP Top 10
- A07:2025 Authentication Failures
- Published
- Modified
- Assigned by
- ENISA (CNA)
- NVD analysis
- Deferred: the NVD does not plan to analyze it
- Record from
- the NVD, synced
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Affected
- sph engineering:ugcs
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| SPH Engineering UgCS | before 6.2 |
Attack patterns (CAPEC)
- CAPEC-22 Exploiting Trust in Client Likelihood: High · Severity: High
- CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data Likelihood: Medium · Severity: Very High
- CAPEC-94 Adversary in the Middle (AiTM) Likelihood: High · Severity: Very High
- CAPEC-114 Authentication Abuse Severity: Medium
- CAPEC-115 Authentication Bypass Severity: Medium
- CAPEC-151 Identity Spoofing Likelihood: Medium · Severity: Medium
- CAPEC-194 Fake the Source of Data Severity: Medium
- CAPEC-593 Session Hijacking Likelihood: High · Severity: Very High
- CAPEC-633 Token Impersonation Severity: Medium
- CAPEC-650 Upload a Web Shell to a Web Server Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.
History
- The NVD deferred its analysis
Changes since this site first stored the record. The same for every record: /api/public/changes.