Attackers Are Actively Hijacking Unpatched Citrix NetScaler Appliances to Plant Web Shells
Security researchers have documented a live exploitation campaign against a critical, already-disclosed Citrix NetScaler flaw, using a clever log-poisoning technique to achieve remote code execution, install web shells,...
Patched Citrix NetScaler Appliances Are Crashing on Their Own, and Nobody’s Sure Why Yet
Citrix customers who rushed to install the emergency 14.1-73.37 build for two actively exploited NetScaler zero-days are now reporting repeated appliance reboots triggered by malformed SAML traffic. Citrix...
Citrix Rushes Emergency Patches as Hackers Actively Exploit NetScaler SAML Zero-Day
Citrix has shipped emergency fixes for CVE-2026-88779, a memory-overflow flaw in NetScaler ADC and Gateway's SAML components that attackers are actively exploiting to knock appliances offline. Administrators running...
Researchers Warn of Two More Unpatched NetScaler Zero-Days Already Under Attack
Security firm watchTowr says it has uncovered two additional, undisclosed remote-code-execution vulnerabilities in Citrix NetScaler during forensic investigations, and that both appear to have been exploited in real-world...
Citrix NetScaler Zero-Days Under Active Attack: Google Uncovers Hidden Web Shell Campaign
Google's threat intelligence team says attackers have been exploiting two critical, now-patched Citrix NetScaler zero-days since early September to plant a stealthy PHP web shell and pivot deep...
CISA Adds Exploited Citrix NetScaler Authentication Bypass to Urgent Fix List
CISA has added CVE-2026-19490, a critical Citrix NetScaler authentication bypass, to its Known Exploited Vulnerabilities catalog. Internet-facing ADC and Gateway deployments supporting remote access should apply Citrix updates...
CISA Orders Rapid Action as Citrix NetScaler Flaw Is Exploited in the Wild
CISA has placed CVE-2026-8452 in its Known Exploited Vulnerabilities catalog following confirmed attacks against Citrix NetScaler products. The memory-safety flaw can disrupt critical gateway services, and organizations should...