Tag: netscaler
34 articles
Citrix Warns of Zero-Day Attack on Unpatched NetScaler Systems
Citrix is warning users of a zero-day attack targeting unpatched NetScaler systems, so if you haven't updated yet, now's the time to take action and protect your systems from potential harm.
Citrix Patches Flaw That Enables RCE in SAML Deployments
Citrix has patched a critical vulnerability, CVE-2026-107406, with a near-perfect score of 9.5, that could allow devastating remote code execution or denial-of-service attacks in SAML deployments. The flaw can be triggered under specific configuration conditions when NetScaler instances are set up as a SAML identity provider or service provider.
Citrix Warns of Immediate Patching Need for NetScaler RCE Flaw
Citrix is sounding the alarm on a critical vulnerability, CVE-2026-107406, that can lead to remote code execution or a denial-of-service state in NetScaler devices - and it's urging admins to patch immediately.
Citrix Warns of Targeted Attacks Via New Zero-Day Flaw
Citrix is warning of targeted attacks exploiting a newly discovered zero-day flaw, CVE-2026-88779, a high-severity memory buffer issue that could disrupt services for vulnerable NetScaler ADC and NetScaler Gateway customers. The company has urged affected users to act quickly to protect themselves from potential denial-of-service attacks.
Citrix NetScaler Zero-Day Exploited in Targeted Attacks
A critical zero-day vulnerability, CVE-2026-88779, has been exploited in targeted attacks, causing concern for Citrix NetScaler ADC and Gateway users. This memory overflow flaw can lead to denial-of-service attacks when specific deployment conditions are met.
Citrix Disrupts Zero-Day Attacks on NetScaler with Emergency Patches
Citrix has rolled out emergency patches to shield NetScaler from zero-day attacks that can cause Denial of Service chaos, and you should update ASAP to avoid getting caught in the crossfire. The newly discovered vulnerability, CVE-2026-88779, has already been exploited in targeted attacks, earning a scary CVSS score of 8.7.
Hackers Exploit Citrix Zero-Day to Deploy Web Shells, Malware
Hackers were quick to pounce on a Citrix zero-day vulnerability, attempting to install a hidden PHP web shell just days before the flaw was publicly disclosed. This early activity sparked a wider campaign, enabling attackers to gain root access, deploy malware, and tunnel into internal networks using the newly disclosed CVE-2026-88771 and CVE-2026-88772 vulnerabilities.
NetScaler Zero-Days Exploited in Wild, 50,277 Instances Exposed
A whopping 50,277 NetScaler instances are potentially vulnerable to two newly exploited zero-day flaws, CVE-2026-88771 and CVE-2026-88772, according to Palo Alto Networks' Cortex Xpanse telemetry. This alarming number was highlighted in Unit 42's threat brief, revealing a possible zero-day attack on NetScaler devices.
Citrix Rushes Patches for Exploited NetScaler Zero-Days
Citrix has rushed out patches for two critical zero-day vulnerabilities, CVE-2026-88771 and CVE-2026-88772, which were being actively exploited by hackers, with a severity rating of 9.5 on the CVSS scale. The patches fix command-injection flaws that allowed remote code execution, and were released just days after researchers warned of the threats.
Citrix Patches Zero-Days Exploited in Active Attacks
Citrix has sounded the alarm, warning that two critical zero-day vulnerabilities, CVE-2026-88771 and CVE-2026-88772, are being actively exploited in the wild, putting unpatched NetScaler deployments at risk. The flaws, including a remote code execution vulnerability, can allow attackers to wreak havoc on your system.
Citrix Warns of Critical Vulnerabilities Under Active Attack
Critical vulnerabilities in Citrix NetScaler appliances are under active attack globally, and the Cybersecurity and Infrastructure Security Agency (CISA) is urging organizations to patch quickly despite the potential complexity of the update process.
Citrix NetScaler Zero-Days Exploited in Wild Ahead of Patches
Citrix administrators were abruptly warned to shut down their NetScaler appliances amid reports of zero-day exploits being used in the wild, with private alerts circulating before patches were available. The sudden shutdowns followed discreet notifications from IT suppliers, security teams, and law enforcement, leaving many scrambling for answers.
Citrix NetScaler Zero-Days Under Active Exploitation
Security firm watchTowr has sounded the alarm about two zero-day vulnerabilities in Citrix NetScaler appliances that are already being exploited in the wild, allowing for remote code execution. These unpatched flaws were discovered during forensic investigations and are expected to have a fix soon.
Citrix NetScaler Flaw Exploited in Targeted Attacks
Citrix is urging customers to act fast to protect their NetScaler deployments from a critical flaw, known as CVE-2026-19490, that lets hackers bypass authentication and gain unauthorized access. To stay safe, review the security bulletin, check if your setup is vulnerable, and upgrade to the recommended build ASAP.
Citrix Flaw Exposes Authentication on NetScaler Servers
Citrix has warned of a critical authentication bypass vulnerability, CVE-2026-19490, affecting NetScaler servers, urging customers to review their configurations and prioritize patching based on exposure and deployment role.
Citrix Warns of Two New NetScaler Flaws
Citrix is urging customers to take immediate action to protect their NetScaler ADC and Gateway deployments from two newly discovered vulnerabilities, including a critical authentication bypass flaw that could allow remote attackers to gain unauthorized access. Upgrade to the recommended builds as soon as possible to safeguard your systems.
Citrix Discloses High-Severity NetScaler Flaw with CitrixBleed Echoes
Citrix has uncovered a high-severity flaw in its NetScaler appliances, adding to concerns about the trend of fragile memory management in these systems, which can lead to sensitive data leaks with just a misconfiguration. This latest vulnerability, CVE-2026-8451, was discovered by watchTowr researchers and is part of six newly disclosed vulnerabilities in Citrix's NetScaler ADC and Gateway appliances.
Citrix Fixes Flaws in NetScaler Software Exposing Users to File Reads and DoS Attacks
Citrix has patched six high-risk vulnerabilities in its NetScaler software, including flaws that could expose users to file reads and devastating denial-of-service attacks. These critical updates address issues with CVSS scores as high as 8.8, emphasizing the urgent need for users to apply the fixes.
Critical Citrix Flaw Sparks Alarming CISA Warning
The Cybersecurity and Infrastructure Security Agency (CISA) is sounding the alarm on a critical Citrix vulnerability that's being actively exploited by threat actors, warning that immediate patching is crucial to prevent severe consequences. Federal agencies and organizations must act fast to protect their systems from this high-risk vulnerability in Citrix NetScaler appliances.
Citrix Warns of Critical NetScaler Vulnerability Exploits
A critical vulnerability in Citrix NetScaler, CVE-2026-3055, is being actively exploited, putting organizations at risk - can yours keep pace with this emerging threat? Experts from watchTowr and Defused are sounding the alarm, and it's time for technologists, policymakers, and users to take notice.
HexStrike AI: Must-Have Tool or Risky Threat?
Security researchers found HexStrike AI — an open‑source red‑teaming tool — being weaponized on underground forums to target newly disclosed Citrix NetScaler flaws within hours, shrinking defenders’ window to act. If you run Citrix ADC, treat disclosures like a ticking clock: patch immediately, apply mitigations, and tighten access.
Citrix NetScaler Must-Have Patch to Stop Risky Exposure
Think you lock your doors at night? More than 13,000 Citrix NetScaler appliances remain exposed online despite patches — one flaw is already being actively exploited, so patch now or isolate and lock down access before attackers find you.
NetScaler appliances Must-Have Urgent Patch Alert
Citrix just released fixes for three critical NetScaler zero-days—one already exploited—so update and verify your appliances immediately. Then shore up defenses with segmentation, MFA and monitoring to reduce exposure while you patch.
CVE-2025-7775 Urgent: Critical NetScaler RCE Risk
Citrix has released fixes for three NetScaler vulnerabilities — including actively exploited CVE-2025-7775 — so if you run NetScaler ADC/Gateway, patch immediately and hunt for signs of compromise. These gateway flaws can allow remote code execution or disruption, so quick action will sharply reduce your risk.