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Serv U CVE-2026-28317

| EUVDEUVD-2026-46298 CRITICAL
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-07-21 SolarWinds GHSA-7fjw-wj65-r37m
9.1
CVSS 3.1 · Vendor: SolarWinds
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Severity by source

Vendor (SolarWinds) PRIMARY
9.1 CRITICAL
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Primary rating from Vendor (SolarWinds) · only source for this CVE.

CVSS VectorVendor: SolarWinds

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 21, 2026 - 16:24 vuln.today
CVE Published
Jul 21, 2026 - 15:39 nvd
CRITICAL 9.1

DescriptionCVE.org

SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to privilege escalation. This issue requires domain administrator access. The impact is lower in Windows deployments.

AnalysisAI

Privilege escalation in SolarWinds Serv-U file transfer server arises from an insecure direct object reference (IDOR) that lets an actor already holding domain administrator access reference and manipulate objects across an authorization boundary. The flaw is fixed in the Serv-U 2026-3 release and has no public exploit identified at time of analysis; SolarWinds itself reported it. Impact is reduced in Windows deployments, which tempers real-world severity despite the 9.1 CVSS score.

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CVE-2026-28317 vulnerability details – vuln.today

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