CVE-2021-27878

Katalog CVE

CVSS 8.8 · High KEV · sudah dieksploitasi Dipakai ransomware EPSS 24,0%

Kerentanan pada veritas backup exec. Skor CVSS 3.1 8.8 (High) menurut NVD. Masuk katalog KEV CISA pada 7 April 2023, artinya sudah terbukti dieksploitasi. Tercatat dipakai dalam kampanye ransomware.

Deskripsi (NVD)

An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. The attacker could use one of these commands to execute an arbitrary command on the system using system privileges.

Rincian

Terbit di NVD

1 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

EPSS (30 hari)

24,0% peluang dieksploitasi; lebih tinggi dari 97,7% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Veritas Backup Exec Agent Command Execution Vulnerability

Masuk KEV

7 April 2023

Tenggat CISA

28 April 2023 (untuk instansi federal AS)

Ransomware

Tercatat dipakai dalam kampanye ransomware

Tindakan wajib

Apply updates per vendor instructions.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.veritas.com/content/support/en_US/security/VTS21-001#issue3 advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27878 pemerintah AS
• http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html exploit · advisory pihak ketiga · vdb entry