How severe is CVE-2022-24402?

CVE-2022-24402 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-24402 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-24402?

CVE-2022-24402 affects Midnightblue Tetra. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-24402?

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

When was CVE-2022-24402 published?

CVE-2022-24402 was published on 2023-10-19 and last updated on 2026-06-17.

CVE-2022-24402

CVE-2022-24402 is a high-severity vulnerability in Midnightblue Tetra with a CVSS 3.x base score of 8.8. 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-307.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Midnightblue Tetra
Published: 2023-10-19
Last modified: 2026-06-17

Description

The TETRA TEA1 keystream generator implements a key register initialization function that compresses the 80-bit key to only 32 bits for usage during the keystream generation phase, which is insufficient to safeguard against exhaustive search attacks.

Frequently asked questions

What is CVE-2022-24402?: The TETRA TEA1 keystream generator implements a key register initialization function that compresses the 80-bit key to only 32 bits for usage during the keystream generation phase, which is insufficient to safeguard against exhaustive search attacks.
How severe is CVE-2022-24402?: CVE-2022-24402 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-24402 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-24402?: CVE-2022-24402 affects Midnightblue Tetra. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-24402?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-24402 published?: CVE-2022-24402 was published on 2023-10-19 and last updated on 2026-06-17.

References

https://tetraburst.com/

Affected products (1)

cpe:2.3:a:midnightblue:tetra\:burst:-:*:*:*:*:*:*:*

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