Vulnerability in Arm Mbed_tls
CVE-2021-36647
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 in…
Vulnerability class: POODLE (CVE-2014-3566)
EPSS: 0.001 (16.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Arm Mbed_tls
- Trustedfirmware Mbed_tls
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-36647?
- CVE-2021-36647 is a medium-severity vulnerability in Arm Mbed_tls, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 4.7/10. Published 2023-01-17.
- How severe is CVE-2021-36647?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2021-36647 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.