{"cve":"CVE-2026-5598","nvd":{"published":"2026-04-15T10:16:49.757","modified":"2026-10-26T21:10:00.170","status":"Awaiting Analysis","description":"Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules).\n\n This vulnerability is associated with program files FrodoEngine.Java.\n\n\n\nThis issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/S:P/AU:Y/U:Red","score":8.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-385"],"references":["https://github.com/bcgit/bc-java/commit/8692e6b2b191fc4aafa32545c7a78bdb9bf110c5","https://github.com/bcgit/bc-java/commit/94abbd56413dfdac651fd878bc60253871ef5e87","https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905598","https://access.redhat.com/errata/RHSA-2026:12267","https://access.redhat.com/errata/RHSA-2026:12269"],"products":[],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-5598","score":0.00899,"percentile":0.59368,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-p93r-85wp-75v3","url":"https://osv.dev/vulnerability/GHSA-p93r-85wp-75v3","summary":"Bouncy Castle Has Covert Timing Channel Vulnerability","modified":"2026-09-10T03:50:44.836711239Z","packages":[{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15to18","purl":"pkg:maven/org.bouncycastle/bcprov-jdk15to18","ranges":[">=1.71 <1.80.2"],"fixed":["1.80.2"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk14","purl":"pkg:maven/org.bouncycastle/bcprov-jdk14","ranges":[">=1.81 <1.81.1"],"fixed":["1.81.1"]},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk18on","purl":"pkg:maven/org.bouncycastle/bcprov-jdk18on","ranges":[">=1.82 <1.84"],"fixed":["1.84"]}]}],"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."]}