CVE-2020-6819

Katalog CVE

CVSS 8.1 · High KEV · sudah dieksploitasi EPSS 3,0%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada mozilla firefox, mozilla thunderbird. Skor CVSS 3.1 8.1 (High) menurut NVD. Masuk katalog KEV CISA pada 3 November 2021, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

Rincian

Terbit di NVD

24 April 2020

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416: Use After Free

EPSS (30 hari)

3,0% peluang dieksploitasi; lebih tinggi dari 87,1% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

Masuk KEV

3 November 2021

Tenggat CISA

3 Mei 2022 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply updates per vendor instructions.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.mozilla.org/security/advisories/mfsa2020-11/ advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2020-14/ advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-6819 pemerintah AS
• https://usn.ubuntu.com/4335-1/ advisory pihak ketiga
• https://bugzilla.mozilla.org/show_bug.cgi?id=1620818 exploit · issue tracking