cve.bz

CVE-2020-15683

9.8 criticalEPSS 2.7%

Critical (9.8). EPSS 2.7% chance of exploitation in the next 30 days.

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.7% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)
CWEs
CWE-416, CWE-787
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON