Ciphertext Malleability in TETRA

published 2023-10-19 3y ago modified 2026-06-17 4mo ago also EUVD-2022-29296

cvss: 5.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

Lack of cryptographic integrity check on TETRA air-interface encrypted traffic. Since a stream cipher is employed, this allows an active adversary to manipulate cleartext data in a bit-by-bit fashion.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2y ago (2024-07-15)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.9	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L/E:U/RL:U/RC:R/CR:H/IR:H/AR:H/MAV:A/MAC:H/MPR:N/MUI:N/MS:U/MC:N/MI:H/MA:L
CNA	3.1	5.9	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

ETSI TETRA Standard

Classification

Weakness

CWE-353 Missing Support for Integrity Check
CWE-354 Improper Validation of Integrity Check Value

References

tetraburst.com /
related, vendor-advisory

Sources

CVE List CVE-2022-24404
NVD CVE-2022-24404

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