CVE-2026-28309
SolarWinds Serv-U Broken Access Control Vulnerability
Description
SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.
INFO
Published Date :
July 21, 2026, 4:17 p.m.
Last Modified :
July 21, 2026, 6:35 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 49f11609-934d-4621-84e6-e02e032104d6 | ||||
| CVSS 3.1 | MEDIUM | 49f11609-934d-4621-84e6-e02e032104d6 | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Review and restrict administrator account creation privileges.
- Apply vendor patches or updates for Serv-U.
- Verify system configurations and access controls.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-28309.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-28309 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-28309
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-28309 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-28309 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jul. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'SolarWinds', 'product': 'Serv-U', 'versions': [{'status': 'affected', 'version': '15.5.4 HF1 and below'}], 'platforms': ['Windows', 'Linux'], 'defaultStatus': 'unaffected'}] Added Description SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Added CWE CWE-862 Added Reference https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm Added Reference https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309