CVE-2021-40521
CriticalPublic PoC
Published: 10 November 2021
Published
10 November 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0886
92.7th percentile
Risk Priority
25
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-40521 is a critical-severity an unspecified weakness vulnerability in Airangel Hsmx-App-25 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 7.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-27697
Vulnerability details
Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
airangel
hsmx-app-25 firmware
≤ 5.2.04
airangel
hsmx-app-100 firmware
≤ 5.2.04
airangel
hsmx-app-1000 firmware
≤ 5.2.04
airangel
hsmx-app-5000 firmware
≤ 5.2.04
airangel
hsmx-app-20000 firmware
≤ 5.2.04
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.