# CVE-2022-24402

## Summary

- **CVE ID:** CVE-2022-24402
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C/CR:H/IR:H/AR:H/MAV:A/MAC:L/MPR:N/MUI:N/MS:U/MC:H/MI:H/MA:H)
- **CWE:** CWE-334
- **Published:** Oct 19, 2023
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- ETSI — TETRA Standard (TEA1)

## References

- [CNA](https://tetraburst.com/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 59.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._