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Vulnerability record · CVE-2024-28987 · published 21 August 2024

CVE-2024-28987: SolarWinds Web Help Desk hardcoded credential flaw

Solarwinds · Web Help Desk

SolarWinds Web Help Desk contains a hardcoded credential vulnerability (CWE-798) that lets a remote, unauthenticated attacker reach internal functionality and modify data. The flaw is rated CVSS 9.1 critical and is listed in CISA's Known Exploited Vulnerabilities catalog, so it is being actively targeted in the wild.

9.1 CVSS 3.1 Critical CISA KEV since 15 Oct 2024 EPSS 93% · top 0.2% CWE-798 · Hard-coded credentials
9.1CVSS 3.1 base score
93%EPSS exploitation probability, 30 days
YesIn CISA KEV, fix deadline passed
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

The SolarWinds Web Help Desk (WHD) software is affected by a hardcoded credential vulnerability, allowing remote unauthenticated user to access internal functionality and modify data.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 17 September 2026. Confidence: high.

critical priorityCVSS 9.1 with unauthenticated remote access, active KEV listing, and a 0.932 EPSS probability make this an urgent patch-first issue.

What it is

SolarWinds Web Help Desk contains a hardcoded credential vulnerability (CWE-798) that lets a remote, unauthenticated attacker reach internal functionality and modify data. The flaw is rated CVSS 9.1 critical and is listed in CISA's Known Exploited Vulnerabilities catalog, so it is being actively targeted in the wild.

Impact

An attacker gains unauthenticated access to internal Web Help Desk functions and can modify data, with high confidentiality and integrity impact but no direct availability impact per the CVSS vector.

Attack surface

Reachable over the network with no authentication and no user interaction required (AV:N/AC:L/PR:N/UI:N). Any internet- or network-exposed Web Help Desk instance is a candidate target.

Exploitation

CISA added this to the KEV catalog on 2024-10-15 with a remediation due date of 2024-11-05, and EPSS shows a 30-day probability of 0.932 (99.8th percentile), indicating active exploitation is expected. No ransomware campaign use is documented in the record.

What to do

  • Apply the SolarWinds Web Help Desk 12.8.3 Hotfix 2 release per the vendor advisory, or discontinue use if mitigations are unavailable.
  • Restrict network access to Web Help Desk instances so they are not exposed to untrusted networks.
  • Rotate any credentials or secrets associated with Web Help Desk and review accounts for unauthorized changes.
  • Monitor vendor advisory and CISA KEV guidance for updated mitigation instructions.

Detection

  • Review Web Help Desk logs for unauthenticated or anomalous access to internal functionality and unexpected data modifications.
  • Hunt for authentication events using default or hardcoded credentials against Web Help Desk endpoints.
  • Alert on outbound or lateral connections from Web Help Desk hosts that are inconsistent with normal behavior.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.

Exploitation in the wild

CISA added CVE-2024-28987 to the Known Exploited Vulnerabilities catalog on 15 October 2024 as "SolarWinds Web Help Desk Hardcoded Credential Vulnerability". Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Federal deadline 5 November 2024.

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-40551SolarWinds Web Help Desk unauthenticated deserialization RCESolarWinds Web Help Desk contains an untrusted data deserialization flaw (CWE-502) that can lead to remote code execution, allowing an attacker to ru…KEVEPSS 84%analysed9.8CVE-2025-40536SolarWinds Web Help Desk security control bypass allows unauthenticated accessSolarWinds Web Help Desk contains a security control bypass (CWE-693) that lets an unauthenticated attacker reach restricted functionality. It is rat…KEVEPSS 74%analysed9.8CVE-2025-26399SolarWinds Web Help Desk unauthenticated deserialization RCESolarWinds Web Help Desk contains an unauthenticated deserialization flaw in the AjaxProxy component that allows remote code execution on the host. I…KEVEPSS 90%analysed9.8CVE-2024-28986SolarWinds Web Help Desk Java deserialization remote code executionSolarWinds Web Help Desk contains a Java deserialization flaw (CWE-502) that allows remote code execution on the host. The vendor originally reported…KEVEPSS 85%analysed9.8CVE-2026-28323Solarwinds web help desk improper authentication vulnerabilitySolarWinds Web Help Desk is found to be affected by a SAML authentication bypass vulnerability. This requires the SAML 2.0 authentication method to b…EPSS 1.0%9.8CVE-2025-40552SolarWinds Web Help Desk authentication bypassSolarWinds Web Help Desk contains an authentication bypass (CWE-1390) that lets an unauthenticated actor invoke actions and methods that should requi…EPSS 52%analysed9.8CVE-2025-40553SolarWinds Web Help Desk unauthenticated deserialization RCESolarWinds Web Help Desk is affected by an untrusted data deserialization flaw (CWE-502) that can lead to remote code execution. The vulnerability is…EPSS 68%analysed9.8CVE-2025-40554SolarWinds Web Help Desk authentication bypassSolarWinds Web Help Desk contains an authentication bypass (CWE-1390) that lets an attacker invoke specific actions within the application without lo…EPSS 61%analysed

Source: NIST National Vulnerability Database (record CVE-2024-28987), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.