importantSYS.SOURCE: The Hacker News• 2026-09-28T12:51:49+05:30

CISA Warns of Global Exploitation of Critical Citrix NetScaler Vulnerabilities

#citrix #vulnerability #cisa #network security #exploit

CISA has added two critical Citrix NetScaler vulnerabilities (CVE-2026-88771 and CVE-2026-88772) to its Known Exploited Vulnerabilities catalog, citing global active exploitation. Affected organizations are urged to apply patches promptly to mitigate risks of remote code execution and system compromise.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Sunday added two critical Citrix NetScaler ADC and Gateway flaws to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation.

The vulnerabilities are listed below -

CVE-2026-88771 (CVSS score: 9.5) - An improper input validation vulnerability that could allow an unauthenticated attacker to

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> PARLEY: FEDERATED DECENTRALIZED IRC CHAT PROTOCOL WITH DOMAIN-BASED IDENTITY > SPACEX'S STARSHIP MEGA-ROCKET COMPLETES FIRST ORBITAL LAUNCH ATTEMPT ON SEPTEMBER 28 > DDOS ATTACK ANALYSIS: NETWORK VULNERABILITIES EXPOSED DURING AUGUST 2026 INCIDENT > JADEPUFFER THREAT GROUP EXPLOITS COMPROMISED AZURE SERVICE PRINCIPALS FOR RESOURCE DELETION > AI FIRMS COMPETE IN ESCALATING THREAT NARRATIVES > COLLECTIVE MEMORY MAPPING: 37,500 BORDER AND COASTLINE DRAWINGS ANALYZED > OPTIMIZING PROMPT ENGINEERING FOR CLAUDE OPUS 5.5: BEHAVIORAL ADJUSTMENTS AND TECHNICAL GUIDELINES > CISA WARNS OF GLOBAL EXPLOITATION OF CRITICAL CITRIX NETSCALER VULNERABILITIES > AI-DRIVEN WEBSITE REDESIGN USING CLOUD-BASED AUTOMATION TOOLS > TRUECALLER EXPANDS SCAM DETECTION BEYOND CALLER ID WITH OPEN-WEB INTELLIGENCE> PARLEY: FEDERATED DECENTRALIZED IRC CHAT PROTOCOL WITH DOMAIN-BASED IDENTITY > SPACEX'S STARSHIP MEGA-ROCKET COMPLETES FIRST ORBITAL LAUNCH ATTEMPT ON SEPTEMBER 28 > DDOS ATTACK ANALYSIS: NETWORK VULNERABILITIES EXPOSED DURING AUGUST 2026 INCIDENT > JADEPUFFER THREAT GROUP EXPLOITS COMPROMISED AZURE SERVICE PRINCIPALS FOR RESOURCE DELETION > AI FIRMS COMPETE IN ESCALATING THREAT NARRATIVES > COLLECTIVE MEMORY MAPPING: 37,500 BORDER AND COASTLINE DRAWINGS ANALYZED > OPTIMIZING PROMPT ENGINEERING FOR CLAUDE OPUS 5.5: BEHAVIORAL ADJUSTMENTS AND TECHNICAL GUIDELINES > CISA WARNS OF GLOBAL EXPLOITATION OF CRITICAL CITRIX NETSCALER VULNERABILITIES > AI-DRIVEN WEBSITE REDESIGN USING CLOUD-BASED AUTOMATION TOOLS > TRUECALLER EXPANDS SCAM DETECTION BEYOND CALLER ID WITH OPEN-WEB INTELLIGENCE