How severe is CVE-2021-40518?

CVE-2021-40518 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-40518 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40518?

CVE-2021-40518 primarily affects Airangel Hsmx-app-25 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40518?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40518 published?

CVE-2021-40518 was published on 2021-11-10 and last updated on 2026-06-17.

CVE-2021-40518

CVE-2021-40518 is a medium-severity vulnerability in Airangel Hsmx-app-25 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Airangel Hsmx-app-25 Firmware
Published: 2021-11-10
Last modified: 2026-06-17

Description

Airangel HSMX Gateway devices through 5.2.04 allow CSRF.

Frequently asked questions

What is CVE-2021-40518?: Airangel HSMX Gateway devices through 5.2.04 allow CSRF.
How severe is CVE-2021-40518?: CVE-2021-40518 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-40518 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40518?: CVE-2021-40518 primarily affects Airangel Hsmx-app-25 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40518?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40518 published?: CVE-2021-40518 was published on 2021-11-10 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:airangel:hsmx-app-25_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:airangel:hsmx-app-100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:airangel:hsmx-app-1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:airangel:hsmx-app-5000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:airangel:hsmx-app-20000_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Airangel Hsmx-app-25 Firmware

CVE-2021-40519 — Critical (CVSS 10.0): Airangel HSMX Gateway devices through 5.2.04 have Hard-coded Database Credentials.
CVE-2021-40520 — Critical (CVSS 9.8): Airangel HSMX Gateway devices through 5.2.04 have Weak SSH Credentials.
CVE-2021-40521 — Critical (CVSS 9.8): Airangel HSMX Gateway devices through 5.2.04 allow Remote Code Execution.
CVE-2021-40517 — Medium (CVSS 5.4): Airangel HSMX Gateway devices through 5.2.04 is vulnerable to stored Cross Site Scripting. XSS Payload is placed in the…

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