CVE-2018-0497: Arm Mbed TLS

Medium severity, CVSS 5.9. EPSS: 2.8% chance of exploitation in the next 30 days.

ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack. This vulnerability exists because of an incorrect fix (with a wrong SHA-384 calculation) for CVE-2013-0169.

Affected products

• Arm Mbed TLS: before 2.1.14 (fixed in 2.1.14); from 2.2.0, before 2.7.5 (fixed in 2.7.5); from 2.8.0, before 2.12.0 (fixed in 2.12.0)
• Debian Debian Linux: version 8.0 only; version 9.0 only

Published 2018-07-28. Last modified 2026-06-17.