Citrix released patches for CVE-2026-19490, a critical authentication bypass flaw (CVSS 9.3) in NetScaler ADC and NetScaler Gateway, by August 20, 2026, after the vulnerability was actively exploited by unauthenticated attackers. The flaw allows remote attackers to bypass authentication controls via an alternate path.
Multiple critical vulnerabilities in Citrix NetScaler ADC and Gateway products are being actively exploited as of late September 2026, including CVE-2026-88771 (command injection) and CVE-2026-19490 (SAML authentication bypass). Citrix released security bulletins and patches are available.
Two unpatched remote-code-execution zero-day vulnerabilities (CVE-2026-88771, CVE-2026-88772) in Citrix NetScaler ADC and Gateway are being actively exploited in attacks as of September 27, 2026. CISA and the Dutch NCSC recommend immediate patching; some IT providers recommend shutting down affected appliances.
Citrix released patches on September 27, 2026, for two critical remote-code-execution zero-day flaws (CVE-2026-88771, CVE-2026-88772) in NetScaler ADC and Gateway that researchers confirmed are being exploited globally. CISA set a deadline for organizations to apply updates.
On 2026-09-27 and 2026-09-28, CERT-EU and CERT-Bund (BSI) issued critical security advisories for Citrix NetScaler ADC and Gateway products, reporting remote code execution vulnerabilities. Additional high-severity flaws in Budibase, QEMU, ESRI ArcGIS, and Kiteworks were also published during this period.
Hackers explotan vulnerabilidad crítica de SSRF en MLflow https:// blog.elhacker.net/2026/08/hack ers-explotan-vulnerabilidad-critica.html
Between September 12 and 16, 2026, the U.S. Cybersecurity and Infrastructure Security Agency warned that attackers are actively exploiting critical vulnerabilities in Citrix NetScaler (authentication bypass), GitLab (maximum severity), and VMware vCenter (remote code execution patched in July). Ransomware gangs have joined attacks on unpatched VMware instances.
Citrix issued an urgent security warning on August 20, 2026, regarding two vulnerabilities affecting NetScaler Gateway and NetScaler ADC networking appliances, including at least one critical unauthenticated flaw. The company urged administrators to patch systems immediately.
SIMs vulnerables: riesgo para móviles, coches y cargadores https:// blog.elhacker.net/2026/08/sims -vulnerables-riesgo-para-moviles.html
"Citrix admins warned to shut down NetScalers over 2 exploited zero-days" "" https://www.
Citrix urges admins to patch new NetScaler flaws as soon as possible https://www.
Cluster mixes Fairphone Linux phone charging, Middle East defense pact, DOE nuclear projects, and RDP honeypot data with no single story. Reports span consumer hardware, international security, energy policy, and cybersecurity intelligence.
CVE-2026-88771 - the loaded Citrix footgun went off again, and the screaming noise is back in our ear. You knew it was coming - enjoy the latest watchTowr Labs blogpost.
Incoherent mix: projectile strike in Strait of Hormuz with crew death and oil price rise; UN report on Gaza cropland destruction (3% usable); unrelated social media posts about website design and AI code testing.
🔹 iTnews - Security Downer invests in security as contracts increasingly demand it Turns up application control, limits privilege. 🔗 https://www.
Google's Chrome 152 update fixes 327 security vulnerabilities, including 10 Critical use-after-free flaws. Update your browser now.
I have seen this "writeup" of the new Citrix 0-days but there's no correlation with anything, no sourcing (Citrix has not released a patch to diff), so I'm very skeptical.
NHIs Now the Number One Corporate Entry Point for Hackers https:// packetstorm.news/news/view/431 07 # news
By September 5, 2026, threat actors were actively exploiting CVE-2026-19490, a critical authentication bypass vulnerability in Citrix NetScaler ADC and Gateway appliances. Previdian confirmed active exploitation in the wild, urging immediate patching.