DEBIAN-CVE-2020-12406

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2020-12406
Published: 09 Jul 2020, 15:15
Last modified:28 Apr 2026, 20:21

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Jul 2020, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:21
Last Modified
Vulnerability information updated

Description

Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Systems

  • debian•firefox-esr

    < 68.9.0esr-1 | < 68.9.0esr-1 | < 68.9.0esr-1 | < 68.9.0esr-1

  • debian•thunderbird

    < 1:68.9.0-1 | < 1:68.9.0-1 | < 1:68.9.0-1 | < 1:68.9.0-1

References (1)