N-able N-central Agent (Windows) < 2026.4.1.26 Multiple Vulnerabilities

critical Nessus Plugin ID 378903

Synopsis

The N-able N-central Agent installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of the N-able N-central Agent installed on the remote Windows host is prior to 2026.4.1.26. It is, therefore, affected by multiple vulnerabilities addressed by the N-central 2026.4 Hotfix 2 security release. That hotfix ships updated Agent and Probe packages, and N-able states that all customers, both hosted and on-premises, must upgrade their Agents and Probes to 2026.4.1.26 or later in addition to the N-central server itself:

- Server-side request forgery (SSRF) vulnerability in N-able N-central allows Server Side Request Forgery.
(CVE-2026-125881)

- Improper restriction of XML external entity reference vulnerability in N-able N-central allows XML Schema Poisoning. (CVE-2026-125883)

- Multiple OGNL injection vulnerabilities in N-able N-central lead to remote code execution. (CVE-2026-125878)

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

Solution

Upgrade the N-able N-central Agent to version 2026.4.1.26 or later.

Plugin Details

Severity: Critical

ID: 378903

File Name: n_able_n_central_agent_2026_4_1_26.nasl

Version: 1.1

Type: Local

Agent: windows

Family: Windows

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 98.83

CVSS v2

Risk Factor: High

Base Score: 9.7

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

CVSS Score Source: CVE-2026-125883

CVSS v3

Risk Factor: Critical

Base Score: 9.4

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-125883

Vulnerability Information

CPE: cpe:/a:n-able:n-central

Required KB Items: installed_sw/N-able N-central Agent

Patch Publication Date: 11/10/2026

Vulnerability Publication Date: 11/10/2026

Reference Information

CVE: CVE-2026-125878, CVE-2026-125879, CVE-2026-125880, CVE-2026-125881, CVE-2026-125882, CVE-2026-125883, CVE-2026-91000

Detections

Analytics