CVE-2018-0488: Arm Mbed TLS

Critical severity, CVSS 9.8. EPSS: 4.8% chance of exploitation in the next 30 days.

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption) via a crafted application packet within a TLS or DTLS session.

Affected products

• Arm Mbed TLS: from 1.3.0, before 1.3.22 (fixed in 1.3.22); from 2.1.0, before 2.1.10 (fixed in 2.1.10); from 2.2.0, before 2.7.0 (fixed in 2.7.0)
• Debian Debian Linux: version 8.0 only; version 9.0 only

Published 2018-02-13. Last modified 2026-06-17.