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CVE-2021-26637— SiHAS Improper Authentication vulnerability

Quick assessment

Affected
Shina System Co.,Ltd SiHAS firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SiHAS firmware / old app是韩国SiHAS公司的一种固件。 SiHAS 的 SGW-300、ACM-300、GCM-300存在安全漏洞，该漏洞源于现有应用程序中没有账户认证和权限检查逻辑。攻击者利用该漏洞可以远程控制设备。

CVSS 8.8 · High EPSS 1.87% · P79
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I. Basic Information for CVE-2021-26637

Vulnerability Information
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Vulnerability Title
SiHAS Improper Authentication vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
There is no account authentication and permission check logic in the firmware and existing apps of SiHAS's SGW-300, ACM-300, GCM-300, so unauthorized users can remotely control the device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
SiHAS 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiHAS firmware / old app是韩国SiHAS公司的一种固件。 SiHAS 的 SGW-300、ACM-300、GCM-300存在安全漏洞，该漏洞源于现有应用程序中没有账户认证和权限检查逻辑。攻击者利用该漏洞可以远程控制设备。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Shina System Co.,Ltd SiHAS firmware 1.xx -
Shina System Co.,Ltd SiHAS old app old app -

II. Public POCs for CVE-2021-26637

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III. Intelligence Information for CVE-2021-26637

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Other References for CVE-2021-26637 (1)

IV. Related Vulnerabilities

Same weakness: CWE-287

V. Comments for CVE-2021-26637

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