{"id":"CVE-2026-34871","details":"An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).","modified":"2026-08-27T03:57:07.566972614Z","published":"2026-04-01T00:00:00Z","related":["openSUSE-SU-2026:10498-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"fixed":"3.6.6"},{"introduced":"4.x"},{"fixed":"4.1.0"},{"fixed":"1.1.0"}],"source":"DESCRIPTION"}],"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34871.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34871.json"},{"type":"ADVISORY","url":"https://mbed-tls.readthedocs.io/en/latest/security-advisories/"},{"type":"ADVISORY","url":"https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-dev-random/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34871"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/Mbed-TLS/mbedtls","events":[{"introduced":"0"},{"fixed":"0bebf8b8c7f07abe3571ded48a11aa907a1ffb20"}],"database_specific":{"cpe":"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"3.6.6"}],"source":"CPE_RANGE"}}],"versions":["v2.26.0","mbedtls-2.26.0","v2.24.0","mbedtls-2.24.0","mbedtls-2.19.1","mbedtls-2.22.0d0","mbedtls-2.21.0","mbedtls-2.20.0","mbedtls-2.20.0d0","mbedtls-2.19.0d2","mbedtls-2.19.0","mbedtls-2.19.0d1","mbedtls-2.16.0","mbedtls-2.14.0","mbedtls-2.13.1","mbedtls-2.13.0","mbedtls-2.12.0","mbedtls-2.11.0","mbedtls-2.10.0","mbedtls-2.7.0","mbedtls-2.9.0","mbedtls-2.8.0","mbedtls-2.8.0-rc1","mbedtls-2.7.0-rc1","mbedtls-2.6.0","mbedtls-2.6.0-rc1","mbedtls-2.5.1","mbedtls-2.5.0","mbedtls-2.4.0","mbedtls-2.2.1","yotta-2.3.1","mbedtls-2.3.0","mbedtls-2.2.0","mbedos-release-15-11","mbedos-techcon-oob2","mbedtls-2.1.2","mbedtls-2.1.0","mbedtls-2.1.1","beta-oob-2","mbedtls-2.0.0","polarssl-1.3.9","polarssl-1.3.8","polarssl-1.3.7","polarssl-1.3.6","polarssl-1.3.5","polarssl-1.3.4","polarssl-1.3.3","polarssl-1.3.2","polarssl-1.3.1","polarssl-1.3.0","polarssl-1.3.0-rc0","polarssl-1.2.6","polarssl-1.2.5","polarssl-1.2.4","polarssl-1.2.2","polarssl-1.2.1","polarssl-1.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34871.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/mbed-tls/tf-psa-crypto","events":[{"introduced":"0"},{"fixed":"29160dd877d29658279fd683b2ae57b320ddcf09"}],"database_specific":{"cpe":"cpe:2.3:a:trustedfirmware:tf-psa-crypto:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.1.0"}],"source":"CPE_RANGE"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34871.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}