Vulnerability Database

314,343

Total vulnerabilities in the database

CVE-2021-23958

The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information. This vulnerability affects Firefox < 85.

  • Published: Feb 26, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-23958
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.5
  • AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:P/I:N/A:N

CWEs:

Software From Fixed in
mozilla / firefox - 85.0