CVE-2023-3466Network attack vector

Browser script execution via reflected input

Published Jul 19, 2023 · Updated Oct 21, 2024

Reflected XSS in Cloud Software Group NetScaler ADC and NetScaler Gateway allows remote attackers to execute scripts in a victim's browser. An undisclosed request path reflects attacker-controlled input into browser-parsed output without context-appropriate encoding. A victim must open an attacker-controlled link while connected to a network that can reach the NSIP, limiting exposure to that browser context.

CVSS severity8.3
High
EPSS probability2.63%
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 Cloud Software Group NetScaler ADC and NetScaler Gateway allows remote attackers to execute scripts in a victim's browser. An undisclosed request path reflects attacker-controlled input into browser-parsed output without context-appropriate encoding. A victim must open an attacker-controlled link while connected to a network that can reach the NSIP, limiting exposure to that browser context.

The record

CVE
CVE-2023-3466
Published
Jul 19, 2023
Updated
Oct 21, 2024
Vendor
Cloud Software Group
Product
NetScaler Gateway
Classifications
CWE-20, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 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=13.0 <91.13
  2. Affected versionversion=13.1 <49.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cloud Software Group · NetScaler Gatewayversion=13.0 <91.13; version=13.1 <49.13
Cloud Software Group · NetScaler ADCversion=12.1-FIPS <55.297; version=12.1-NDcPP <55.297; version=13.0 <91.13; version=13.1 <49.13; version=13.1-FIPS <37.159

Published CVSS scores

8.3CitrixCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-20Improper Input Validation
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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