Auth bypass in Sky Co., Ltd. Skysea Client View
CVE-2016-7836
SKYSEA Client View Ver.11.221.03 and earlier allows remote code execution via a flaw in processing authentication on the TCP connection with the management console program.
Vulnerability class: Broken Authentication
EPSS: 0.194 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Sky Co., Ltd. Skysea Client View — versions Ver.11.221.03 and earlier
- Skygroup Skysea_client_view
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- vultures@jpcert.or.jp (x_refsource_CONFIRM, Vendor Advisory)
- vultures@jpcert.or.jp (Technical Description, x_refsource_CONFIRM, Exploit, Third Party Advisory)
- vultures@jpcert.or.jp (VDB Entry, Third Party Advisory, x_refsource_JVN, third-party-advisory)
- vultures@jpcert.or.jp (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2016-7836?
- CVE-2016-7836 is a critical-severity vulnerability in Sky Co., Ltd. Skysea Client View, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-06-09.
- How severe is CVE-2016-7836?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-7836 known to be exploited?
- Yes. CVE-2016-7836 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-14), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.