CVE-2022-24402

Intentionally weakened effective strength in TETRA TEA1

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Published Oct 19, 2023 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

ETSI

TETRA Standard

unaffected

Version	Status	Constraints
`TEA1`	affected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2022-29294	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.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.602% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://tetraburst.com/

History

Feb 24, 2026 9:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Midnightblue Tetra\

Weaknesses

Sources

CVE record Updated: Sep 12, 2024, 8:31 PM

Status: PUBLISHED
Assigner: NCSC-NL
Published: Oct 19, 2023, 9:32 AM
Updated: Sep 12, 2024, 8:31 PM
Reserved: Feb 4, 2022, 4:43 AM

View source JSON

Vulnrichment Updated: Aug 3, 2024, 4:13 AM

Updated: Aug 3, 2024, 4:13 AM

NVD Updated: Jun 17, 2026, 4:31 AM

Status: Modified
Published: Oct 19, 2023, 10:15 AM
Modified: Jun 17, 2026, 4:31 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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