CVE-2018-6961Known exploitationPublic exploitNetwork attack vector

Unauthenticated code execution via diagnostic command injection

Published Jun 11, 2018 · Updated Oct 21, 2025

Command injection in VMware NSX SD-WAN by VeloCloud Edge 3.1.1 allows remote attackers to execute code via web UI diagnostics. The /scripts/ajaxPortal.lua run_diagnostic handler processes attacker-controlled destination or name parameters as shell input, interpreting command substitutions during ping, traceroute, or DNS tests. Exploitation requires network access to the local web UI, which is disabled by default, and requires no credentials.

CVSS severity8.1
High
EPSS probability85.34%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in VMware NSX SD-WAN by VeloCloud Edge 3.1.1 allows remote attackers to execute code via web UI diagnostics. The /scripts/ajaxPortal.lua run_diagnostic handler processes attacker-controlled destination or name parameters as shell input, interpreting command substitutions during ping, traceroute, or DNS tests. Exploitation requires network access to the local web UI, which is disabled by default, and requires no credentials.

The record

CVE
CVE-2018-6961
Published
Jun 11, 2018
Updated
Oct 21, 2025
Vendor
Spring
Product
NSX SD-WAN by VeloCloud
Classifications
CWE-78, T1059.004, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2018CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record 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=prior to version 3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · NSX SD-WAN by VeloCloudversion=prior to version 3.1.0

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20269
Sep 23, 20265
Sep 24, 20269
Sep 25, 202617
Sep 26, 20265
Sep 27, 202616
Sep 28, 202611
Latest reporting daySep 28, 2026
Latest daily unique IPs11
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell
T1190Exploit Public-Facing Application

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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