How severe is CVE-2024-33897?

CVE-2024-33897 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2024-33897 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33897?

CVE-2024-33897 affects Hms-networks Ewon Cosy+ Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33897?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-33897 have an EU (EUVD) identifier?

Yes. CVE-2024-33897 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31601.

When was CVE-2024-33897 published?

CVE-2024-33897 was published on 2024-08-06 and last updated on 2026-06-17.

CVE-2024-33897

CVE-2024-33897 is a critical-severity vulnerability in Hms-networks Ewon Cosy+ Firmware with a CVSS 3.x base score of 9.1. 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-425.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31601
Weakness: CWE-425
Affected product: Hms-networks Ewon Cosy+ Firmware
Published: 2024-08-06
Last modified: 2026-06-17

Description

A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue. The issue was patched on the Talk2m production server on April 18, 2024.

Frequently asked questions

What is CVE-2024-33897?: A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue. The issue was patched on the Talk2m production server on April 18, 2024.
How severe is CVE-2024-33897?: CVE-2024-33897 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2024-33897 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33897?: CVE-2024-33897 affects Hms-networks Ewon Cosy+ Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33897?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-33897 have an EU (EUVD) identifier?: Yes. CVE-2024-33897 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31601.
When was CVE-2024-33897 published?: CVE-2024-33897 was published on 2024-08-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Hms-networks Ewon Cosy+ Firmware

CVE-2024-33894 — High (CVSS 8.8): Insecure Permission vulnerability in Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below…
CVE-2024-33892 — High (CVSS 7.5): Insecure Permissions vulnerability in Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below…
CVE-2024-33896 — High (CVSS 7.2): Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to code injection…
CVE-2024-33895 — Medium (CVSS 6.6): Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 use a unique key to encrypt the…
CVE-2024-33893 — Medium (CVSS 6.1): Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when…

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