AUGUST 4, 2026
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Case File

CVE-2020-20949

MEDIUM · CVSS 5.9 EPSS 0.92%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-20 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2020-20949
Severity
MEDIUM
CVSS
5.9
EPSS
0.92%
Oracle

Original NVD Description

Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in STM32 cryptographic firmware library software expansion for STM32Cube (UM1924). The vulnerability can allow one to use Bleichenbacher's oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.