VulnerabilityModified
CVE-2021-26637
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.
CRITICAL 9.8EPSS 1.87%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.87% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287, CWE-306, CWE-862
- Affected
- shinasys/sihas sgw-300 firmware · shinasys/sihas acm-300 firmware · shinasys/sihas gcm-300 firmware
- Source
- vuln@krcert.or.kr
References
- https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66782Broken Link, Third Party Advisory, VDB Entry
- https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66782Broken Link, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.