CVEs / CVE-2016-7836

CVE-2016-7836: SKYSEA Client View Improper Authentication Vulnerability

Known exploited in the CISA KEV catalog since 14 Oct 2025
critical 9.8 CVSS 3.1 (NVD)
EPSS 19.2% chance of exploitation in the next 30 days, higher than 97% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

SKYSEA Client View contains an improper authentication vulnerability that allows remote code execution via a flaw in processing authentication on the TCP connection with the management console program.
CISA, Known Exploited Vulnerabilities catalog

Description

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.
The CVE record, via NVD · published 9 Jun 2017 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
Sky Co., LTD. SKYSEA Client View	Ver.11.221.03 and earlier	—

Exploitation

In CISA KEV since	14 Oct 2025
Due date for US federal agencies	4 Nov 2025
Used in ransomware campaigns	Unknown
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.

Severity

CVSS 3.1	9.8 critical `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-287

References

CVE-2016-7836 on NVD
CVE-2016-7836 in the CISA KEV catalog
https://www.skyseaclientview.net/news/161221/ (cited by CISA)
http://www.securityfocus.com/bid/95062 Third Party Advisory, VDB Entry
http://www.skyseaclientview.net/news/161221/ Vendor Advisory
https://jvn.jp/en/jp/JVN84995847/index.html Third Party Advisory, VDB Entry
https://www.skygroup.jp/security-info/170308.html Exploit, Technical Description, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-7836 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.