{"cve":"CVE-2017-13098","nvd":{"published":"2017-12-13T01:29:00.280","modified":"2026-06-17T01:04:32.400","status":"Modified","description":"BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as \"ROBOT.\"","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-203"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00011.html","http://www.kb.cert.org/vuls/id/144389","http://www.securityfocus.com/bid/102195","https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c","https://robotattack.org/"],"products":["bouncycastle:bc-java"],"source":"nvd","synced_at":"2026-10-19T20:47:56.471723566+00:00"},"epss":{"cve":"CVE-2017-13098","score":0.24282,"percentile":0.97863,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wrwf-pmmj-w989","url":"https://osv.dev/vulnerability/GHSA-wrwf-pmmj-w989","summary":"Observable Discrepancy in BouncyCastle","modified":"2023-11-08T03:58:54.947561Z","packages":[{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15on","purl":"pkg:maven/org.bouncycastle/bcprov-jdk15on","ranges":["<1.0.3"],"fixed":["1.0.3"]}]}],"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."]}