VULNERABILITY INTELLIGENCE
CVE-2020-20949
CVSS score5.9 MEDIUM
EPSS probability0.94%
CISA KEVNot currently listed
Published2021-01-20
Last modified2026-07-09
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
Weakness classification
- nvd@nist.gov: CWE-327
Primary references
- cve@mitre.org — Technical Description, Third Party Advisory
- cve@mitre.org — Technical Description, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Technical Description, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Technical Description, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory