What is CVE-2018-19608?

CVE-2018-19608 is a medium-severity vulnerability in Arm Mbed TLS, classified under Improper Privilege Management. CVSS score: 4.7/10. Published 2018-12-05.

How severe is CVE-2018-19608?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Privilege escalation in Arm Mbed TLS

CVE-2018-19608

Arm Mbed TLS before 2.14.1, before 2.7.8, and before 2.1.17 allows a local unprivileged attacker to recover the plaintext of RSA decryption, which is used in RSA-without-(EC)DH(E) cipher suites.

Vulnerability class: Privilege Escalation

Published 2018-12-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-03 (Third Party Advisory)
cat.eyalro.net/ (Third Party Advisory)
tls.mbed.org/tech-updates/releases/mbedtls-2.14.1-2.7.8-and-2.1.17-released (Third Party Advisory)

Frequently asked questions

What is CVE-2018-19608?: CVE-2018-19608 is a medium-severity vulnerability in Arm Mbed TLS, classified under Improper Privilege Management. CVSS score: 4.7/10. Published 2018-12-05.
How severe is CVE-2018-19608?: Medium severity. CVSS v3 base score is 4.7 out of 10.