RHEL 8 : openssl (RHSA-2026:26275)

high Nessus Plugin ID 321230

Synopsis

The remote Red Hat host is missing one or more security updates for openssl.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26275 advisory.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

* openssl: Use After Free with SSL_free_buffers (CVE-2024-4741)

* openssl: Heap Use-After-Free in OpenSSL PKCS7_verify() (CVE-2026-45447)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL openssl package based on the guidance in RHSA-2026:26275.

Plugin Details

Severity: High

ID: 321230

File Name: redhat-RHSA-2026-26275.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 6/16/2026

Updated: 6/16/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-45447

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:openssl-devel, p-cpe:/a:redhat:enterprise_linux:openssl-libs, p-cpe:/a:redhat:enterprise_linux:openssl-perl, cpe:/o:redhat:rhel_tus:8.8, p-cpe:/a:redhat:enterprise_linux:openssl, cpe:/o:redhat:rhel_eus:8.10, cpe:/o:redhat:rhel_e4s:8.8, cpe:/o:redhat:enterprise_linux:8

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 4/8/2024

Reference Information

CVE: CVE-2024-4741, CVE-2026-45447

CWE: 416, 825

RHSA: 2026:26275

Detections

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