CVE-2021-36647EPSS p5.8%
CVE-2021-36647CVE-2021-36647
arm / mbed_tls
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.
Scoring
| CVSS | 4.7 () |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 0.16% probability of exploitation · percentile 5.8% · 2026-06-18T12:00:27Z |
| Last modified | 2026-06-05 |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.