CVE-2021-35225Network attack vector

Cross-tenant infrastructure disclosure via unscoped NetPath access

Published Oct 21, 2021 · Updated Sep 17, 2024

Access control failure in SolarWinds Network Performance Monitor through 2020.2.6 HF1 lets remote authenticated users view cross-tenant NetPath data. The NetPath Services view fails to confine results to the MSP customer assigned to the signed-in Orion account, although SolarWinds does not identify the affected handler or authorization check. Exploitation requires a valid Orion account in an MSP deployment and exposes limited infrastructure details across customer boundaries without reported service interruption.

CVSS severity5.0
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Access control failure in SolarWinds Network Performance Monitor through 2020.2.6 HF1 lets remote authenticated users view cross-tenant NetPath data. The NetPath Services view fails to confine results to the MSP customer assigned to the signed-in Orion account, although SolarWinds does not identify the affected handler or authorization check. Exploitation requires a valid Orion account in an MSP deployment and exposes limited infrastructure details across customer boundaries without reported service interruption.

The record

CVE
CVE-2021-35225
Published
Oct 21, 2021
Updated
Sep 17, 2024
Vendor
SolarWinds
Product
Network Performance Monitor
Classifications
T1016
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2020.2.6 Hotfix 1 and previous versions <2020.2.6 Hotfix 2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SolarWinds · Network Performance Monitorversion=2020.2.6 Hotfix 1 and previous versions <2020.2.6 Hotfix 2

Published CVSS scores

5.0SolarWindsCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
6.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1016System Network Configuration Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo