SolarWinds Web Help Desk up to 12.8.8 HF1 deserialization

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in SolarWinds Web Help Desk up to 12.8.8 HF1. Impacted is an unknown function. This manipulation causes deserialization. This vulnerability appears as CVE-2025-40551. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability has been found in SolarWinds Web Help Desk up to 12.8.8 HF1 and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

It is possible to read the advisory at solarwinds.com. This vulnerability is known as CVE-2025-40551 since 04/16/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but an exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/04/2026).

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 297225 (SolarWinds Web Help Desk < 2026.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/03/2026 with a due date of 02/06/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (297225), EUVD (EUVD-2025-206426) and CERT Bund (WID-SEC-2026-0247). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • SolarWinds Web Help Desk

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (SolarWinds): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297225
Nessus Name: SolarWinds Web Help Desk < 2026.1 Multiple Vulnerabilities

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2025 CVE reserved
01/28/2026 +287 days Advisory disclosed
01/28/2026 +0 days VulDB entry created
02/04/2026 +7 days VulDB entry last update

Sourcesinfo

Vendor: solarwinds.com

Advisory: solarwinds.com
Status: Confirmed

CVE: CVE-2025-40551 (🔒)
GCVE (CVE): GCVE-0-2025-40551
GCVE (VulDB): GCVE-100-343183
EUVD: 🔒
CERT Bund: WID-SEC-2026-0247 - SolarWinds Web Help Desk: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/28/2026 09:10
Updated: 02/04/2026 11:10
Changes: 01/28/2026 09:10 (60), 01/29/2026 12:04 (7), 01/29/2026 23:13 (1), 01/31/2026 01:26 (2), 02/03/2026 21:01 (13), 02/04/2026 11:10 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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