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CVE-2026-28318

SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability

Published: Jun 4, 2026Updated: Jul 22, 2026 Sources: CVE List NVD BDUCWE-400
7.5HIGH
NVD MITRE
EPSS Score
8.4%
Top 5.6%
CISA KEV
Active Exploitation
Since Jun 5, 2026
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-400

Affected Products

SolarWinds Inc.
commercial·USaka access rights manager, solarwinds orion platform, serv-u file server
SolarWinds Serv-UOn-premWeb App
Enterprise Software / itsm-monitoring
SolarWinds
commercial·USaka solar winds
Serv-UOn-premWeb App
Enterprise Software / itsm-monitoring
and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jun 5, 2026
Remediation due:Jun 19, 2026

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Official Patch Available
Workaround Available
Is your org exposed to CVE-2026-28318?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318
solarwinds.com
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318
cisa.gov
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm
documentation.solarwinds.com
and 3 more references View all →
News mentions
8

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