Menu

  • Alerts
  • Incidents
  • News
  • APTs
  • Cyber Decoded
  • Cyber Hygiene
  • Cyber Review
  • Cyber Tips
  • Definitions
  • Malware
  • Threat Actors
  • Tutorials

Useful Tools

  • Password generator
  • Report an incident
  • Report to authorities
No Result
View All Result
CTF Hack Havoc
CyberMaterial
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
Hall of Hacks
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
No Result
View All Result
Hall of Hacks
CyberMaterial
No Result
View All Result
Home Alerts

Critical Citrix NetScaler Flaw Exploited

August 17, 2023
Reading Time: 2 mins read
in Alerts
Critical Citrix NetScaler Flaw Exploited

In a recent alarming incident, a significant number of approximately 2,000 Citrix NetScaler servers have been compromised in a large-scale campaign. The attack leveraged a remote code execution vulnerability, identified as CVE-2023-3519, to breach the servers’ security.

Citrix had previously issued a warning about this critical vulnerability, emphasizing its potential severity. The flaw, rated with a CVSS score of 9.8, facilitates code injection, enabling unauthorized remote code execution and posing a substantial risk to the affected systems.

The exploited vulnerability, CVE-2023-3519, allows attackers to exploit unauthenticated remote code execution, with successful compromise potentially affecting appliances configured as Gateways or AAA virtual servers. Citrix urged affected users to promptly install updated versions to mitigate the risk. The United States Cybersecurity and Infrastructure Security Agency (CISA) revealed that threat actors were utilizing this vulnerability to implant web shells into vulnerable systems, providing them with persistent access.

Furthermore, the NCC Group disclosed an ongoing massive campaign involving the exploitation of Citrix NetScalers. This initiative, conducted jointly with the Dutch Institute of Vulnerability Disclosure (DIVD), uncovered the automated exploitation of CVE-2023-3519, leading to the placement of web shells on vulnerable NetScalers.

Although some servers were patched, the campaign highlighted the persistent risks posed by backdoors, urging administrators to remain vigilant. Mandiant has also responded by releasing a tool to aid organizations in scanning their Citrix appliances for signs of post-exploitation activity related to CVE-2023-3519. This incident underscores the pressing need for robust cybersecurity measures to combat evolving threats and secure critical infrastructure.

Reference:
  • Citrix ADC and Citrix Gateway Security Bulletin for CVE-2023-3519, CVE-2023-3466, CVE-2023-3467
Tags: August 2023CitrixCitrix NetScalerCyber AlertCyber Alerts 2023CyberattackCybersecurityData BreachServersVulnerabilities
ADVERTISEMENT

Related Posts

Fake Firms Push Malware on Crypto Users

Fake Sites Push Investment Scams

July 11, 2025
Fake Firms Push Malware on Crypto Users

Severe WordPress Flaw 200K Sites at Risk

July 11, 2025
Fake Firms Push Malware on Crypto Users

Fake Firms Push Malware on Crypto Users

July 11, 2025
Hackers Revive SEO Poisoning

Hackers Revive SEO Poisoning

July 10, 2025
Hackers Revive SEO Poisoning

RondoDox Botnet Exploits Router Flaws

July 10, 2025
Hackers Revive SEO Poisoning

ServiceNow Data Exposure via ACLs

July 10, 2025

Latest Alerts

Fake Sites Push Investment Scams

Fake Firms Push Malware on Crypto Users

Severe WordPress Flaw 200K Sites at Risk

RondoDox Botnet Exploits Router Flaws

ServiceNow Data Exposure via ACLs

Hackers Revive SEO Poisoning

Subscribe to our newsletter

    Latest Incidents

    Microsoft’s Outlook Long Outage

    Avantic Lab Affected By Ransomware

    $40M+ Stolen from GMX Crypto Platform

    Bitcoin Depot Breach Exposes Data

    McDonald’s AI Hiring Bot Exposes Data

    Nippon Steel Solutions Data Breach

    CyberMaterial Logo
    • About Us
    • Contact Us
    • Jobs
    • Legal and Privacy Policy
    • Site Map

    © 2025 | CyberMaterial | All rights reserved

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In

    Add New Playlist

    No Result
    View All Result
    • Alerts
    • Incidents
    • News
    • Cyber Decoded
    • Cyber Hygiene
    • Cyber Review
    • Definitions
    • Malware
    • Cyber Tips
    • Tutorials
    • Advanced Persistent Threats
    • Threat Actors
    • Report an incident
    • Password Generator
    • About Us
    • Contact Us
    • Advertise with us

    Copyright © 2025 CyberMaterial