{"id":"CVE-2022-24402","aliases":["EUVD-2022-29294","GHSA-2hcc-ww5c-44wh"],"status":"published","title":"Intentionally weakened effective strength in TETRA TEA1","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.","severity":{"version":"3.1","score":8.8,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00602,"percentile":0.4925,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307","CWE-334"],"published":"2023-10-19T09:32:23Z","modified":"2026-06-17T04:31:46Z","products":[{"vendor":"etsi","product":"tetra standard"},{"vendor":"midnightblue","product":"tetra\\"}],"references":[{"url":"https://tetraburst.com/","tags":["related","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-24402"},{"url":"https://tetraburst.com"},{"url":"https://github.com/advisories/GHSA-2hcc-ww5c-44wh"}],"sources":{"cve":[{"id":"CVE-2022-24402","title":"Intentionally weakened effective strength in TETRA TEA1","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.","status":"published","published":"2023-10-19T09:32:23.476Z","modified":"2024-09-12T20:31:31.278Z","cvss":[{"version":"3.1","score":8.8,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-334"],"updated_at":"2026-11-02T14:34:34.940806Z"}],"euvd":[{"id":"EUVD-2022-29294","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.","status":"published","published":"2023-10-19T09:32:23Z","modified":"2024-09-12T20:31:31Z","cvss":[{"version":"3.1","score":8.8,"vector":"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","level":"high"}],"updated_at":"2026-11-03T00:55:56.381285Z"}],"ghsa":[{"id":"GHSA-2hcc-ww5c-44wh","title":"The TETRA TEA1 keystream generator implements a key register initialization function that...","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.","status":"published","published":"2023-10-19T12:30:23Z","modified":"2024-04-04T08:47:21Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-307","CWE-334"],"updated_at":"2026-11-02T14:57:01.229221Z"}],"nvd":[{"id":"CVE-2022-24402","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.","status":"published","published":"2023-10-19T10:15:09.573Z","modified":"2026-06-17T04:31:46.467Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-334","CWE-307"],"updated_at":"2026-11-02T14:07:39.811118Z"}]}}