CVE-2018-12404

5.9 mediumEPSS 44%

Medium (5.9) in mozilla network security services. EPSS 44% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

5.9 medium

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

EPSS: 44% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
Published: 2019-05-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:network_security_services

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
http://www.securityfocus.com/bid/107260
https://access.redhat.com/errata/RHSA-2019:2237
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2018-12404
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf

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