CVE-2021-40519

Exp

Airangel HSMX Gateway devices through 5.2.04 have Hard-coded Database Credentials.

Published: 2021-11-10 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-40519 is rated High Exploit Risk (77.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.10%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-40519

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-40519

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.25% 1.10% +0.85%
2 2025-03-30 0.49% 0.25% -0.24%
3 2025-03-29 — 0.49% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-40519

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.8 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2021-40519

Affected software / configurations for CVE-2021-40519

Vendor Product Version Raw CPE
airangel hsmx-app-25_firmware <= 5.2.04 cpe:2.3:o:airangel:hsmx-app-25_firmware:*:*:*:*:*:*:*:*
airangel hsmx-app-100_firmware <= 5.2.04 cpe:2.3:o:airangel:hsmx-app-100_firmware:*:*:*:*:*:*:*:*
airangel hsmx-app-1000_firmware <= 5.2.04 cpe:2.3:o:airangel:hsmx-app-1000_firmware:*:*:*:*:*:*:*:*
airangel hsmx-app-5000_firmware <= 5.2.04 cpe:2.3:o:airangel:hsmx-app-5000_firmware:*:*:*:*:*:*:*:*
airangel hsmx-app-20000_firmware <= 5.2.04 cpe:2.3:o:airangel:hsmx-app-20000_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-40519

cvelogic Threat Intelligence