TI-2025-27046 Aliases CVE-2025-40553 GHSA-5gq3-mh83-6m28

SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability

CRITICAL 86CWE-502Published 2026-01-28 · Updated 2026-02-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.67975 99th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
SolarWinds	Web Help Desk	12.8.8 HF1 and below and later	—	No fix listed	CNA

Web Help Desk VendorSolarWinds Affected 12.8.8 HF1 and below and later Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:solarwinds:web_help_desk::::::::	before 2026.1	Vulnerable	SolarWinds

cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:* Versions before 2026.1 Vulnerable ·SolarWinds

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-40553
2026-10-03 Alias added: GHSA-5gq3-mh83-6m28

References

Advisory 1

https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40553

Other 1

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm

TI-2025-27044 SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2025-27034 SolarWinds Web Help Desk Security Control Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2025-19358 SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2024-19175 SolarWinds Web Help Desk Java Deserialization Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2024-19176 SolarWinds Web Help Desk Hardcoded Credential Vulnerability KEVCVSS 3.1CRITICAL 9.1
TI-2025-27047 SolarWinds Web Help Desk Authentication Bypass Vulnerability CVSS 3.1CRITICAL 9.8

See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences