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Case File

CVE-2018-16395

CRITICAL · CVSS 9.8 EPSS 10.71%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-11-16 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects OpenSSL. Its EPSS score suggests a 10.7% probability of exploitation in the next 30 days.

CVE
CVE-2018-16395
Severity
CRITICAL
CVSS
9.8
EPSS
10.71%
OpenSSL

Original NVD Description

An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations.

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