Vulnerability Details : 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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2021-26637
- cpe:2.3:o:shinasys:sihas_sgw-300_firmware:-:*:*:*:*:iphone_os:*:*
- cpe:2.3:o:shinasys:sihas_sgw-300_firmware:-:*:*:*:*:android:*:*
- cpe:2.3:o:shinasys:sihas_acm-300_firmware:-:*:*:*:*:iphone_os:*:*
- cpe:2.3:o:shinasys:sihas_acm-300_firmware:-:*:*:*:*:android:*:*
- cpe:2.3:o:shinasys:sihas_gcm-300_firmware:-:*:*:*:*:iphone_os:*:*
- cpe:2.3:o:shinasys:sihas_gcm-300_firmware:-:*:*:*:*:android:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-26637
0.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-26637
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
KrCERT/CC |
CWE ids for CVE-2021-26637
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by:
- nvd@nist.gov (Primary)
- vuln@krcert.or.kr (Secondary)
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: nvd@nist.gov (Primary)
-
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-26637
-
https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66782
Security Advisory | KrCERT/CC - KISA 인터넷 보호나라&KrCERTBroken Link;Third Party Advisory;VDB Entry
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