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Vulnerability record · CVE-2018-12404 · published 2 May 2019

CVE-2018-12404: Mozilla network security services vulnerability

Mozilla · Network Security Services

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.

5.9 CVSS 3.0 Medium EPSS 44% · top 1.3%
5.9CVSS 3.0 base score, v2 4.3
44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
http://www.securityfocus.com/bid/107260 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:2237
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404 Issue TrackingVDB EntryVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
http://www.securityfocus.com/bid/107260 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:2237
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404 Issue TrackingVDB EntryVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-12404), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.