{"id":"CVE-2018-12404","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-12404","generatedAt":"2026-10-29T00:34:17.333Z","title":"A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content.","description":"A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content. This is a variant of the Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) and affects all NSS versions prior to NSS 3.41.","published":"2019-05-02T17:29:02.000Z","lastModified":"2026-06-17T01:37:43.000Z","status":"Modified","sourceIdentifier":"security@mozilla.org","cvss":{"version":"3.0","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":[],"affected":["mozilla/network security services"],"epss":{"score":0.44248,"percentile":0.98751,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.39588,"percentile":0.98591},{"date":"2026-09-22","score":0.44248,"percentile":0.98699}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 44.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html","source":"security@mozilla.org"},{"url":"http://www.securityfocus.com/bid/107260","tags":["Third Party Advisory","VDB Entry"],"source":"security@mozilla.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:2237","source":"security@mozilla.org"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404","tags":["Issue Tracking","VDB Entry","Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf","source":"security@mozilla.org"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html","source":"security@mozilla.org"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04","source":"security@mozilla.org"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html","source":"security@mozilla.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/107260","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:2237","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404","tags":["Issue Tracking","VDB Entry","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-12404","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}