{"cve":"CVE-2015-7940","nvd":{"published":"2015-11-09T16:59:09.277","modified":"2026-06-17T00:33:25.317","status":"Modified","description":"The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an \"invalid curve attack.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200","CWE-310"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174915.html","http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00012.html","http://rhn.redhat.com/errata/RHSA-2016-2035.html","http://rhn.redhat.com/errata/RHSA-2016-2036.html","http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.html"],"products":["bouncycastle:bouncy_castle_crypto_package","opensuse:leap","opensuse:opensuse","oracle:application_testing_suite","oracle:enterprise_manager_ops_center","oracle:peoplesoft_enterprise_peopletools","oracle:virtual_desktop_infrastructure"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2015-7940","score":0.0469,"percentile":0.9179,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4mv7-cq75-3qjm","url":"https://osv.dev/vulnerability/GHSA-4mv7-cq75-3qjm","summary":"Moderate severity vulnerability that affects org.bouncycastle:bcprov-jdk14 and org.bouncycastle:bcprov-jdk15","modified":"2025-09-12T20:11:53.388848Z","packages":[{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15","purl":"pkg:maven/org.bouncycastle/bcprov-jdk15","ranges":["<1.51"],"fixed":["1.51"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk14","purl":"pkg:maven/org.bouncycastle/bcprov-jdk14","ranges":["<1.51"],"fixed":["1.51"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15on","purl":"pkg:maven/org.bouncycastle/bcprov-jdk15on","ranges":["<1.51"],"fixed":["1.51"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}