CVE-2021-36647
- State
- Published
- Severity
- 4.7 Medium
- Published
- Jan 17, 2023
- Updated
- Nov 3, 2025
- Reserved
- Jul 12, 2021
Description
Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.7 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-327 Use of a Broken or Risky Cryptographic Algorithm
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
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