CVE-2021-23987: mozilla firefox +2 lainnya

csirt@kutim:~/threat-intel/cve/CVE-2021-23987

CVSS 8.8 · High EPSS 1,4%

Kerentanan Out-of-bounds Write pada mozilla firefox, mozilla firefox esr +1 lainnya. Skor CVSS 3.1 8.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 31 Maret 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 8.8 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-787: Out-of-bounds Write
EPSS (30 hari): 1,4% peluang dieksploitasi; lebih tinggi dari 72,0% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
mozilla	firefox	Semua versi sebelum 87.0
mozilla	firefox esr	Semua versi sebelum 78.9
mozilla	thunderbird	Semua versi sebelum 78.9

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 issue tracking · patch · advisory vendor
https://www.mozilla.org/security/advisories/mfsa2021-10/ advisory vendor
https://www.mozilla.org/security/advisories/mfsa2021-11/ advisory vendor
https://www.mozilla.org/security/advisories/mfsa2021-12/ advisory vendor

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.