Detections
Analytics

SolarWinds Web Help Desk < 12.8.7 Hotfix 1 Unsafe Deserialization

critical Nessus Plugin ID 265951

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Synopsis

The remote host is missing one or more security updates.

Description

The version of Solarwinds Web Help Desk installed on the remote host is prior to 12.8.7 Hotfix 1. It is, therefore, affected by an unsafe deserialization vulnerability.

 - SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.

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

Solution

Upgrade to Solarwinds Web Help Desk version 12.8.7 Hotfix 1 or later.

See Also

http://www.nessus.org/u?ced4e5df

Plugin Details

Severity: Critical

ID: 265951

File Name: solarwinds_web_help_desk_12_8_7_hf1.nasl

Version: 1.3

Type: combined

Agent: windows

Family: Misc.

Published: 9/26/2025

Updated: 3/9/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

CVSS Score Source: CVE-2025-26399

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

Vulnerability Information

CPE: cpe:/a:solarwinds:web_help_desk

Required KB Items: Settings/ParanoidReport, installed_sw/Solarwinds Web Help Desk

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/23/2025

Vulnerability Publication Date: 9/23/2025

CISA Known Exploited Vulnerability Due Dates: 3/12/2026

Reference Information

CVE: CVE-2025-26399

IAVA: 2025-A-0697-S