{"id":"JLSEC-2025-210","summary":"An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS)","details":"An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by `mbedtls_mpi_exp_mod` are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.","modified":"2026-07-23T22:30:18.889770985Z","published":"2025-11-21T15:59:04.054Z","upstream":["CVE-2020-36475"],"database_specific":{"sources":[{"modified":"2026-06-17T03:15:34.277Z","published":"2021-08-23T02:15:06.930Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-36475","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36475","database_specific":{"status":"Modified"},"id":"CVE-2020-36475","imported":"2026-07-17T20:45:24.618Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf"},{"type":"WEB","url":"https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9"},{"type":"WEB","url":"https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0"},{"type":"WEB","url":"https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"}],"affected":[{"package":{"name":"MbedTLS_jll","ecosystem":"Julia","purl":"pkg:julia/MbedTLS_jll?uuid=c8ffd9c3-330d-5841-b78e-0817d7145fa1"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.25.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-210.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}