Intentionally weakened effective strength in TETRA TEA1
Priority LOW 39CWE-334Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-307.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00602 49th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ETSI | TETRA Standard | TEA1 | — | No fix listed | CNA |
- TETRA Standard VendorETSI Affected TEA1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:midnightblue:tetra\:burst:-:*:*:*:*:*:*:* | burst | Vulnerable | Midnightblue |
- cpe:2.3:a:midnightblue:tetra\:burst:-:*:*:*:*:*:*:* Versions burst Vulnerable ·Midnightblue
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-24402
- 2026-10-03 Alias added: GHSA-2hcc-ww5c-44wh
References
Advisory 1
More ETSI vulnerabilities
- TI-2022-08277 Keystream recovery for arbitrary frames in TETRA CVSS 3.1HIGH 8.8
- TI-2022-08276 DCK pinning attack in TETRA CVSS 3.1HIGH 7.5
- TI-2022-08280 Ciphertext Malleability in TETRA CVSS 3.1HIGH 7.5
- TI-2019-06649 The ETSI Enterprise Transport Security (ETS, formerly known as eTLS) protocol does not… CVSS 3.0MEDIUM 5.9
- TI-2022-08279 De-anonymization attack in TETRA CVSS 3.1MEDIUM 4.3
Sources
- CVE-2022-24402 · CVE Program
- CVE-2022-24402 · NVD
- FIRST EPSS
- GHSA-2hcc-ww5c-44wh · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences