CVE-2021-26637

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jun 23, 2022
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-266389.8Improper Authentication vulnerability in S&D smarthome(smartcare) application can cause authentication bypass and information exposure. RemoCVE-2021-266397.5This vulnerability is caused by the lack of validation of input values for specific functions if WISA Smart Wing CMS. Remote attackers can uCVE-2021-266429.8When uploading an image file to a bulletin board developed with XpressEngine, a vulnerability in which an arbitrary file can be uploaded dueCVE-2021-266449.8SQL-Injection vulnerability caused by the lack of verification of input values for the table name of DB used by the Mangboard bulletin boardCVE-2021-266758.8A stack-based buffer overflow in dnsproxy in ConnMan before 1.39 could be used by network adjacent attackers to execute code.CVE-2021-266766.5gdhcp in ConnMan before 1.39 could be used by network-adjacent attackers to leak sensitive stack information, allowing further exploitation CVE-2021-266777.8A local authenticated escalation of privilege vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8CVE-2021-266786.1A remote unauthenticated stored cross-site scripting (XSS) vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior CVE-2021-266797.2A remote authenticated command injection vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HFCVE-2021-266807.2A remote authenticated command injection vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HFCVE-2021-266817.2A remote authenticated command Injection vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HFCVE-2021-266826.1A remote reflected cross-site scripting (XSS) vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8
CVE-2021-26637: Critical severity, CVSS 9.8 | Vulnix