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Case File

CVE-2018-12438

MEDIUM · CVSS 4.9 EPSS 0.46%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-06-15 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.9. See the original NVD description below for full technical details.

CVE
CVE-2018-12438
Severity
MEDIUM
CVSS
4.9
EPSS
0.46%

Original NVD Description

The Elliptic Curve Cryptography library (aka sunec or libsunec) allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.