How severe is CVE-2021-34600?

CVE-2021-34600 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-34600 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-2021-34600?

CVE-2021-34600 affects Telenot Compasx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34600?

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

When was CVE-2021-34600 published?

CVE-2021-34600 was published on 2022-01-20 and last updated on 2026-06-17.

CVE-2021-34600

CVE-2021-34600 is a medium-severity vulnerability in Telenot Compasx with a CVSS 3.x base score of 5.5. 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-335.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.9
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-335
Affected product: Telenot Compasx
Published: 2022-01-20
Last modified: 2026-06-17

Description

Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.

Frequently asked questions

What is CVE-2021-34600?: Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.
How severe is CVE-2021-34600?: CVE-2021-34600 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-34600 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-2021-34600?: CVE-2021-34600 affects Telenot Compasx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34600?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34600 published?: CVE-2021-34600 was published on 2022-01-20 and last updated on 2026-06-17.

References

https://www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/

Affected products (1)

cpe:2.3:a:telenot:compasx:*:*:*:*:*:*:*:*

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