CVE-2026-28308
Received Received - Intake

SolarWinds Serv-U IDOR Leads to Remote Code Execution

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: SolarWinds

Description
SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to remote code execution. Domain administrator access is required. The impact is lower in Windows deployments.

CVSS Scores

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-28308
EUVD
EUVD-2026-46289

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
solarwinds serv-u *
solarwinds serv-u to 2026.3 (exc)
solarwinds serv-u 2026.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This vulnerability is an insecure direct object reference (IDOR) in SolarWinds Serv-U that allows remote code execution. It requires domain administrator access to exploit and has reduced impact in Windows deployments.

Detection Guidance

To detect CVE-2026-28308, check if your SolarWinds Serv-U version is 15.5.4 HF1 or below. Upgrade to version 2026.3 or later to mitigate the risk. No specific commands are provided in the resources for detection.

Impact Analysis

An attacker with domain admin access could execute arbitrary code on the affected system, potentially leading to full system compromise or unauthorized access to sensitive data.

Compliance Impact

The vulnerability allows remote code execution with domain administrator access, which could lead to unauthorized data access or modification. This may violate GDPR's data protection requirements or HIPAA's security rules if sensitive data is compromised. The high CVSS score (9.1) indicates significant risk to confidentiality, integrity, and availability of systems.

Mitigation Strategies

Update SolarWinds Serv-U to version 2026.3 or later to address the IDOR vulnerability. Ensure domain administrator access is restricted and monitor for unusual activity.

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