CVE-2022-24400
DCK pinning attack in TETRA
A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set session key DCK to zero.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
DCK pinning attack in TETRA
A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set session key DCK to zero.
- Record
CVE-2022-24400- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R/CR:H/IR:H/AR:H/MAV:A/MAC:H/MPR:N/MUI:N/MS:U/MC:H/MI:H/MA:H - Weakness
- CWE-807
- Updated
- 2026-11-02
EUVDEUVD-2022-29292
A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set session key DCK to zero.
- Record
EUVD-2022-29292- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R/CR:H/IR:H/AR:H/MAV:A/MAC:H/MPR:N/MUI:N/MS:U/MC:H/MI:H/MA:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6w2r-58cq-54q2
A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS...
A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set session key DCK to zero.
- Record
GHSA-6w2r-58cq-54q2- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-639, CWE-807
- Updated
- 2026-11-02
NVD
A flaw in the TETRA authentication procecure allows a MITM adversary that can predict the MS challenge RAND2 to set session key DCK to zero.
- Record
CVE-2022-24400- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-807, CWE-639
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-24400 is a high vulnerability (CVSS 7.5) in Etsi Tetra Standard, published October 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. No source names a fixed version.