CVE-2021-26637 | BDVDB-2026-178702 Detail

Shina SystemSiHAS firmware

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: adjacent.

Weaknesses#

CWE-287 Improper Authentication

References#

https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66782

Exploit#

No public exploit known

History#

Version 12022-06-22Record published in the CVE List.
Version 22024-08-03Most recent update recorded in the CVE List.

Published

Published: 2022-06-22
Last modified: 2024-08-03

Vendor information

Vendor: Shina System
Product: SiHAS firmware

All Shina System vulnerabilities

Score

8.8 High

EPSS

1.9%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 80.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
1.xx
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.8 High

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

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).