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Case File

CVE-2019-11727

MEDIUM · CVSS 5.3 EPSS 1.74%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-07-23 · Last synced 2026-08-04

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CVE
CVE-2019-11727
Severity
MEDIUM
CVSS
5.3
EPSS
1.74%
Firefox

Original NVD Description

A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68.