{"id":"JLSEC-2026-713","details":"Heap-based buffer overflow in the KCAPI ECC code path of `wc_ecc_import_x963_ex()` in wolfSSL wolfcrypt allows a remote attacker to write attacker-controlled data past the bounds of the `pubkey_raw` buffer via a crafted oversized EC public key point. The `WOLFSSL_KCAPI_ECC` code path copies the input to key-\u003e`pubkey_raw` (132 bytes) using XMEMCPY without a bounds check, unlike the ATECC code path which includes a length validation. This can be triggered during TLS key exchange when a malicious peer sends a crafted ECPoint in ServerKeyExchange.","modified":"2026-07-25T18:24:00.391171481Z","published":"2026-07-14T21:41:35.775Z","upstream":["CVE-2026-4395","EUVD-2026-13235"],"database_specific":{"sources":[{"published":"2026-03-19T21:17:13.660Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4395","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4395","database_specific":{"status":"Analyzed"},"id":"CVE-2026-4395","imported":"2026-07-17T22:29:18.657Z","modified":"2026-06-17T10:56:31.190Z"},{"id":"EUVD-2026-13235","imported":"2026-07-17T22:29:28.703Z","modified":"2026-03-20T17:09:33Z","published":"2026-03-19T20:41:55Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-13235","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-13235"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://github.com/wolfSSL/wolfssl/pull/9988"}],"affected":[{"package":{"name":"wolfSSL_jll","ecosystem":"Julia","purl":"pkg:julia/wolfSSL_jll?uuid=98c43586-9870-5ae5-ab22-acc77b9bbdb5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.9.2+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-713.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:D/RE:L/U:Amber"}]}