{"cve":"CVE-2018-16868","nvd":{"published":"2018-12-03T14:29:00.333","modified":"2026-06-17T01:44:57.103","status":"Modified","description":"A Bleichenbacher type side-channel based padding oracle attack was found in the way gnutls handles verification of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run process on the same physical core as the victim process, could use this to extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N","score":5.6},"cwes":["CWE-203"],"references":["http://cat.eyalro.net/","http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html","http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00068.html","http://www.securityfocus.com/bid/106080","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16868"],"products":["gnu:gnutls"],"source":"nvd","synced_at":"2026-10-19T20:53:59.789560037+00:00"},"epss":{"cve":"CVE-2018-16868","score":0.00577,"percentile":0.47585,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}