CVE-2024-8534Network attack vector

Unauthenticated service disruption via RDP memory corruption

Published Nov 12, 2024 · Updated Nov 21, 2024

Memory corruption in NetScaler ADC and Gateway before fixed builds allows remote attackers to crash configured appliances via RDP traffic. NetScaler has not disclosed the RDP-processing component or exact invalid memory operation that corrupts memory. Exposure requires an RDP-enabled VPN or AAA virtual server, or an RDP Proxy Server Profile bound to a VPN virtual server.

CVSS severity8.4
High
EPSS probability0.56%
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

Memory corruption in NetScaler ADC and Gateway before fixed builds allows remote attackers to crash configured appliances via RDP traffic. NetScaler has not disclosed the RDP-processing component or exact invalid memory operation that corrupts memory. Exposure requires an RDP-enabled VPN or AAA virtual server, or an RDP Proxy Server Profile bound to a VPN virtual server.

The record

CVE
CVE-2024-8534
Published
Nov 12, 2024
Updated
Nov 21, 2024
Vendor
Cloud Software Group
Product
NetScaler ADC 13.1 FIPS
Classifications
CWE-119, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 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=13.1 <13.1-37.207

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cloud Software Group · NetScaler ADC 13.1 FIPSversion=13.1 <13.1-37.207
Cloud Software Group · NetScaler ADC 12.1 NDcPPversion=12.1 <12.1-55.321
Cloud Software Group · NetScaler Gatewayversion=12.1-FIPS <55.321; version=12.1-NDcPP <55.321; version=13.1 <55.34; version=13.1-FIPS <37.207; version=14.1 <14.1-29.72; version=14.1 <29.72
Cloud Software Group · NetScaler ADC 12.1 FIPSversion=12.1 <12.1-55.321
Cloud Software Group · NetScaler ADCversion=12.1-FIPS <55.321; version=12.1-NDcPP <55.321; version=13.1 <13.1-55.34; version=13.1 <55.34; version=13.1-FIPS <37.207; version=14.1 <14.1-29.72; version=14.1 <29.72

Published CVSS scores

8.4CitrixCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:L

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499Endpoint Denial of Service

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