CVE-2025-40553 (GCVE-0-2025-40553)

Vulnerability from cvelistv5 – Published: 2026-01-28 07:35 – Updated: 2026-02-27 04:55
VLAI Previdian
Title
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-28 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
SolarWinds CNA under the mitre root
CNA scorecard B 83/100 over 30 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
SolarWinds Web Help Desk Affected: 12.8.8 HF1 and below
guessed Create a notification for this product.
Date Public
2026-01-28 07:35
Credits
Piotr Bazydlo working with watchTowr
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 03860642-d7e6-4f7f-bb28-1911c2911c28

Vulnerability ID: CVE-2025-40553

Status: Confirmed

Status Updated: 2026-09-01 12:15 UTC

Exploited: Yes

Timestamps
First Seen: 2026-09-01
Asserted: 2026-09-01
Scope
Notes: SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability | Affected: SolarWinds / Web Help Desk | CVSS: 9.8 (CRITICAL) | EPSS: 0.67975 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
Cve Id CVE-2025-40553
Vendor SolarWinds
Ghsa Id None
Product Web Help Desk
Added Date 2026-09-01T12:15:41.982Z
Cvss Score 9.8
Epss Score 0.67975
Previous Ids
Cvss Severity CRITICAL
Virtual Patch True
Cvss Estimated False
Epss Percentile 0.99323
Used In Malware unknown
Vulnerability Id CVE-2025-40553
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-09-02 13:00 UTC | Updated: 2026-11-04 13:00 UTC
Show details on NVD website
To clipboard 

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