How severe is CVE-2022-24401?

CVE-2022-24401 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-2022-24401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-24401?

CVE-2022-24401 affects Midnightblue Tetra. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-24401?

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-2022-24401 published?

CVE-2022-24401 was published on 2023-10-19 and last updated on 2026-06-17.

CVE-2022-24401

CVE-2022-24401 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-639.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Midnightblue Tetra
Published: 2023-10-19
Last modified: 2026-06-17

Description

Adversary-induced keystream re-use on TETRA air-interface encrypted traffic using any TEA keystream generator. IV generation is based upon several TDMA frame counters, which are frequently broadcast by the infrastructure in an unauthenticated manner. An active adversary can manipulate the view of these counters in a mobile station, provoking keystream re-use. By sending crafted messages to the MS and analyzing MS responses, keystream for arbitrary frames can be recovered.

Frequently asked questions

What is CVE-2022-24401?: Adversary-induced keystream re-use on TETRA air-interface encrypted traffic using any TEA keystream generator. IV generation is based upon several TDMA frame counters, which are frequently broadcast by the infrastructure in an unauthenticated manner. An active adversary can manipulate the view of these counters in a mobile station, provoking keystream re-use. By sending crafted messages to the MS and analyzing MS responses, keystream for arbitrary frames can be recovered.
How severe is CVE-2022-24401?: CVE-2022-24401 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-2022-24401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-24401?: CVE-2022-24401 affects Midnightblue Tetra. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-24401?: 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-2022-24401 published?: CVE-2022-24401 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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