cvedb.io
CVE-2021-36647
MEDIUM · CVSS 4.7
EPSS exploitation probability: 0%
Published 2023-01-17T21:15:10.880 · Last modified 2026-06-17T03:58:59.387

Summary

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.

Affected products

arm — mbed_tls

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.