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- 1Critical Zero-Day Vulnerabilities in Citrix NetScaler Under Active Exploitation●(tenable.com) Critical Zero-Day Vulnerabilities in Citrix NetScaler Under Active Exploitation: FAQ and Analysis In brief
Security firm Tenable has published an FAQ and analysis on two reported zero-day vulnerabilities in Citrix NetScaler appliances that are allegedly being actively exploited in the wild. NetScaler devices are widely used by enterprises for application delivery and remote access, making these flaws a serious concern. Security teams are being urged to review the guidance, check whether their appliances are affected, and apply mitigations or patches as they become available.
- 2Citrix confirms two actively exploited NetScaler zero-day flaws●Two Citrix NetScaler zero-day RCE flaws are under active exploitation. Citrix confirmed CVE-2026-88771 and CVE-2026-8877
Citrix has confirmed two zero-day remote code execution vulnerabilities in its NetScaler application delivery products, tracked as CVE-2026-88771 and CVE-2026-88772, both under active exploitation. The company has released patches, and security researchers are urging administrators to update internet-facing NetScaler and VPN appliances immediately, warning that unpatched systems could allow attackers to run code remotely.
- 3Citrix NetScaler zero-days under active exploitation●Two Citrix NetScaler zero-day flaws enabling remote code execution are reportedly under active exploitation. No CVE or p
Two zero-day vulnerabilities in Citrix NetScaler appliances, both allowing remote code execution, are reportedly being actively exploited by attackers. No CVE identifiers or official patches have been released yet. Administrators running NetScaler as VPN or application delivery controllers are urged to apply interim mitigation steps and watch for an official Citrix advisory.
- 4Two Unpatched NetScaler Flaws Under Active Exploitation, Researchers Warn▼Third NetScaler emergency since June. watchTowr says two unpatched remote code execution flaws in NetScaler ADC and Gate
Security firm watchTowr reports two unpatched remote code execution vulnerabilities in Citrix NetScaler ADC and Gateway that are being actively exploited. The flaws surfaced during forensic work, marking the third NetScaler emergency since June. Citrix has issued no bulletin, CVEs, or fix yet, with patches expected early next week. Some administrators are already applying workarounds rather than waiting.
- 5Citrix NetScaler Users Urged to Take Appliances Offline Amid Zero-Day Attacks▼Citrix NetScaler Appliance Users Get Shutdown Orders Over Unpatched Zero-Day Exploits Citrix NetScaler ADC and Gateway a
Citrix NetScaler ADC and Gateway appliances are under active attack through two unpatched remote code execution vulnerabilities. The Dutch cybersecurity agency NCSC and security firm watchTowr have advised organisations to take affected appliances offline, as no patches are yet available. Security teams worldwide are scrambling to assess exposure and mitigate the risk of compromise.
- 6IT teams pull Citrix NetScaler offline over zero-day reports●Enterprise IT teams are pulling Citrix NetScaler hardware offline after reports surfaced of two unpatched zero-day vulne
Enterprise IT teams are taking Citrix NetScaler hardware offline following reports of two unpatched zero-day vulnerabilities. Security researchers say the flaws are being actively exploited for remote code execution in the wild, though Citrix has not yet confirmed them or released an official patch. Administrators are choosing to isolate the hardware rather than wait, and security communities are urging others to assess exposure immediately.
- 7Organizations urged to take Citrix NetScaler appliances offline▼🚨 Citrix NetScaler emergency shutdowns Organizations are reportedly being advised to take Citrix NetScaler appliances of
Security experts are warning organizations to take Citrix NetScaler appliances offline amid reports of two undisclosed zero-day vulnerabilities. There are no public CVEs, no patch is available yet, and only limited indicators of compromise have been shared. The affected scope is not fully clear, but the emergency guidance suggests defenders consider the risk serious enough to warrant disconnecting the devices until fixes arrive.
- 8Citrix NetScaler admins urged to take appliances offline over new zero-days●Citrix NetScaler admins are being told to shut down appliances amid reports of two new zero-days https:// lemmy.world/po
Security administrators running Citrix NetScaler appliances are being told to shut the devices down following reports of two newly discovered zero-day vulnerabilities. The warnings, circulating among security professionals, reflect fears that attackers are actively exploiting the flaws before patches are available, leaving defenders with few options beyond taking affected appliances offline until fixes are released.
- 9Citrix issues security bulletin for eight NetScaler vulnerabilities●Citrix has finally spoken. Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2
Citrix has released a long-awaited security bulletin for its NetScaler ADC and NetScaler Gateway products, covering eight vulnerabilities tracked as CVE-2026-88771 through CVE-2026-88778. Administrators of the widely used application delivery and remote access products are being urged to review the advisory and apply the relevant patches, as NetScaler flaws have historically been heavily exploited.