CVE-2026-40514

Katalog CVE

CVSS 9.1 · Critical EPSS 0,26%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) pada smartertools smartermail. Skor CVSS 3.1 9.1 (Critical) menurut NVD.

Deskripsi (NVD)

SmarterTools SmarterMail builds prior to 9610 contain a cryptographic weakness in the file and email sharing endpoints that use DES-CBC encryption with keys and initialization vectors derived from System.Random seeded with insufficient entropy, reducing the seed space to approximately 19,000 possible values. An unauthenticated attacker can use the attachment download endpoint as an oracle to determine the seed in use and derive encryption keys and initialization vectors to forge sharing tokens for arbitrary emails, attachments, or file storage contents without prior access to the targeted content.

Rincian

Terbit di NVD

27 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 16,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.vulncheck.com/advisories/smartertools-smartermail-build-9610-cryptographic-weakness-via-weak-rng advisory pihak ketiga
• https://www.smartertools.com/smartermail/release-notes/current release notes