CVE-2023-20868Network attack vector

User redirection via unvalidated reflected script input

Published May 26, 2023 · Updated Jan 16, 2025

Reflected XSS in VMware NSX-T 3.2.x allows remote attackers to inject HTML or JavaScript that redirects users to malicious pages. VMware has not identified the affected web-interface endpoint or parameter; it states only that unvalidated input is reflected as HTML or JavaScript. Exploitation is unauthenticated over the network but requires user interaction, and the published impact is limited to redirection and low confidentiality exposure.

CVSS severity6.1
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in VMware NSX-T 3.2.x allows remote attackers to inject HTML or JavaScript that redirects users to malicious pages. VMware has not identified the affected web-interface endpoint or parameter; it states only that unvalidated input is reflected as HTML or JavaScript. Exploitation is unauthenticated over the network but requires user interaction, and the published impact is limited to redirection and low confidentiality exposure.

The record

CVE
CVE-2023-20868
Published
May 26, 2023
Updated
Jan 16, 2025
Vendor
VMware
Product
VMware NSX
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=NSX-T 3.2.x VCF 4.5.x

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

VMware · VMware NSXversion=NSX-T 3.2.x VCF 4.5.x

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3VMwareCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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

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Your stack

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