CVE record · 13 sources
CVE-2026-88772
KEV · due 30 Sep 2026 (overdue)CVSS 9.5Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- Vendor
- Citrix
- Product
- NetScaler
- CVSS v4.0
- 9.5
- EPSS
- 0.78 (p100)
- CISA KEV
- added 27 Sep 2026, due 30 Sep 2026 (32d overdue)
- Weakness
- CWE-119
- Exposure class
- Edge / VPN / firewall, Network management
Coverage
13Every item in the archive that references this CVE, highest rank first. Headlines open the publisher.
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Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for remote code execution or denial of service
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Citrix NetScaler RCE zero-day Vulnerabilities
What is the Attack? Threat actors are actively exploiting two critical remote code execution vulnerabilities, CVE-2026-88771 and CVE-2026-88772, affecting Citrix NetScaler ADC and NetScaler Gateway appliances. Citrix confirmed…
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Critical Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC, Gateway
Update October 9, 2026 : CISA has updated this Alert to: (1) include CVE-2026-107406; (2) include CVE-2026-88779 following its addition to the KEV Catalog on Oct. 4, 2026; (3) clarify the potential relationship between…
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CISA Adds Two Known Exploited Vulnerabilities to Catalog
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-88771 Citrix NetScaler Improper Input Validation Vulnerability CVE-2026-88772 Citrix…
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Rapid7 Analysis: NetScaler intrusions chaining CVE-2026-88771 and CVE-2026-88779
Overview In early October 2026, Rapid7 analysts investigated a compromise of a Citrix NetScaler ADC appliance. The appliance was running an affected 14.1 build and was exposed to active exploitation targeting NetScaler…
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Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild (Updated September 30)
Unit 42 is aware of possible 0-day activity against NetScaler devices. Citrix reports CVE-2026-88771, CVE-2026-88772 have been exploited in the wild. The post Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772…
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Defending Against Active Exploitation of Citrix NetScaler ADC and Gateway Appliances
Introduction In late September 2026, Mandiant Consulting and Google Threat Intelligence Group (GTIG) identified active, in-the-wild exploitation of a zero-day vulnerability (CVE-2026-88772) affecting Citrix NetScaler ADC and…
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Citrix NetScaler vulnerabilities (CVE-2026-88771, CVE-2026-88772) in active exploitation
Categories: Threat Research Tags: advisory, vulnerability, Citrix
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Here We Go Again (Citrix NetScaler DTLS Preauth Memory Overflow CVE-2026-88772)
Part 1 of this week's saga can be found here. This research is a glimpse into the capabilities that power our Preemptive Exposure Management solution, enabling organizations to rapidly react to emerging threats: the watchTowr…
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Oh Look, The Foot Gun Went Off Again (Citrix NetScaler PreAuth Command Injection CVE-2026-88771)
God damn it, we're back in the room again. Yes, that sound in your ears is screaming. The footgun has gone off again, shockingly, and we are yet again dealing with a situation where the entire world apparently knew about Citrix…
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Beyond the patch: Protecting your NetScaler gateway against future vulnerabilities
CVE-2026-88771 lets attackers run commands on NetScaler Gateway before anyone signs in. Patching takes time most teams don't have, so the sign-in decision has to move in front of the vulnerable code.
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September 2026 CVE Landscape
In September 2026, Insikt Group® identified 94 high-impact vulnerabilities that should be prioritized for remediation, 59 of which had a Very Critical Recorded Future Risk Score. This represents a 29% increase from last month.
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5th October – Threat Intelligence Report
For the latest discoveries in cyber research for the week of 5th October, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Arizona’s state court system has suffered a phishing-led cyberattack after an…