https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-03T08:53:21.637922+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2021-23987 CVE-2021-23987 2026-10-03T08:53:21.639075+00:00

Affected: Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird

Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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 < 78.9, Firefox < 87, and Thunderbird < 78.9.