CVE-2026-84143

Katalog CVE

CVSS 9.8 · Critical EPSS 0,38%

Kerentanan Improper Restriction of Operations within the Bounds of a Memory Buffer pada mozilla firefox, mozilla thunderbird. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

Rincian

Terbit di NVD

1 September 2026

Terakhir diubah

3 September 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 29,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.mozilla.org/security/advisories/mfsa2026-82/ advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2026-84/ advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2026-85/ advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2026-86/ advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2026-87/ advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2026-88/ advisory vendor
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=2048793%2C2054645%2C2057114%2C2059109%2C2061287 issue tracking
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=2054631%2C2054657%2C2055007%2C2055681%2C2057107%2C2058087%2C20... issue tracking
• https://bugzilla.mozilla.org/show_bug.cgi?id=2057108 issue tracking