Vulnerability Database

314,343

Total vulnerabilities in the database

CVE-2021-29974

When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to override an error on a domain which had specified HTTP Strict Transport Security (which implies that the error should not be override-able.) This issue did not affect the network connections, and they were correctly upgraded to HTTPS automatically. This vulnerability affects Firefox < 90.

  • Published: Aug 5, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-29974
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS v2:

  • Severity: Low
  • Score: 2.6
  • AV:N/AC:H/Au:N/C:N/I:P/A:N

No CWE or OWASP classifications available.