RHEL 8 : tftp (RHSA-2026:78952)

high Nessus Plugin ID 364154

Synopsis

The remote Red Hat host is missing a security update for tftp.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:78952 advisory.

The Trivial File Transfer Protocol (TFTP) is typically used only for booting diskless workstations. The tftp packages include the tftp and tftp-server subpackages. The tftp subpackage provides the user interface for TFTP and the tftp-server subpackage provides the server. This allows users to transfer files to and from a remote machine.

Security Fix(es):

* tftp: tftp-hpa: Denial of Service due to out-of-bounds read/write in remap engine (CVE-2026-85234)

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 this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL tftp package based on the guidance in RHSA-2026:78952.

Plugin Details

Severity: High

ID: 364154

File Name: redhat-RHSA-2026-78952.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/8/2026

Updated: 10/8/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.6

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-85234

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_eus:8.10, p-cpe:/a:redhat:enterprise_linux:tftp-server, p-cpe:/a:redhat:enterprise_linux:tftp

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: 10/8/2026

Vulnerability Publication Date: 9/15/2026

Reference Information

CVE: CVE-2026-85234

CWE: 125

RHSA: 2026:78952

Detections

Analytics