DEBIAN-CVE-2020-15659

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2020-15659
Published: 10 Aug 2020, 18:15
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

10 Aug 2020, 18:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:21
Last Modified
Vulnerability information updated

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.

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

    < 68.11.0esr-1 | < 68.11.0esr-1 | < 68.11.0esr-1 | < 68.11.0esr-1

  • debian•thunderbird

    < 1:68.11.0-1 | < 1:68.11.0-1 | < 1:68.11.0-1 | < 1:68.11.0-1

References (1)