VULNERABILITY INTELLIGENCE
CVE-2021-23998
CVSS score6.5 MEDIUM
EPSS probability0.59%
CISA KEVNot currently listed
Published2021-06-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Description
Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Weakness classification
- nvd@nist.gov: CWE-345
Primary references
- security@mozilla.org — Issue Tracking, Permissions Required, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory