CVE-2026-84637: mozilla thunderbird

csirt@kutim:~/threat-intel/cve/CVE-2026-84637

CVSS 9.8 · Critical EPSS 0,63%

Kerentanan Unrestricted Upload of File with Dangerous Type pada mozilla thunderbird. Skor CVSS 3.1 9.8 (Critical) menurut CISA ADP.

Deskripsi (NVD)

Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.

Rincian

Terbit di NVD: 1 September 2026
Terakhir diubah: 3 September 2026
Status NVD: Analyzed
CVSS 3.1: 9.8 (Critical), sumber CISA ADP
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-434: Unrestricted Upload of File with Dangerous Type
EPSS (30 hari): 0,63% peluang dieksploitasi; lebih tinggi dari 48,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
mozilla	thunderbird	Semua versi sebelum 153.2.0
mozilla	thunderbird	Versi 154.0 hingga sebelum 155.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://www.mozilla.org/security/advisories/mfsa2026-78/ advisory vendor
https://www.mozilla.org/security/advisories/mfsa2026-88/ advisory vendor
https://bugzilla.mozilla.org/show_bug.cgi?id=2043878 permissions required

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.