AUGUST 4, 2026
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Case File

CVE-2025-5987

HIGH · CVSS 8.1 EPSS 1.44%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-07-07 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.1. It affects OpenSSL.

CVE
CVE-2025-5987
Severity
HIGH
CVSS
8.1
EPSS
1.44%
OpenSSL

Original NVD Description

A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.

Related CVEs

Other vulnerabilities affecting the same vendor(s)