CVE-2021-40520
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
- Record
CVE-2021-40520- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-521
- Updated
- 2026-11-02
CVE List No score
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
- Record
CVE-2021-40520- Updated
- 2026-11-02
EUVDEUVD-2021-27696 No score
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
- Record
EUVD-2021-27696- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wcg7-h679-fv25
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
- Record
GHSA-wcg7-h679-fv25- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-522
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40520 is a critical vulnerability (CVSS 9.8) in Airangel Hsmx-app-1000 Firmware, published November 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.18%, the 67th percentile. No source names a fixed version.