CVE-2026-88772
8.1, high Known exploitedCitrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVSS
- 8.1, high high CVSS v3.1
- EPSS, next 30 days
- 1% higher than 69.9% of scored CVEs
- Exploitation
- Confirmed in the wild
- Published
- 27 Sept 202620 days ago
Known exploited
CISA added this to the Known Exploited Vulnerabilities Catalog on 27 Sept 2026. US federal agencies had to remediate by 30 Sept 2026, a deadline that has passed.
Required action. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Description
Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to Remote Code Execution or Denial of Service
Details
- Vendor
- Citrix
- Product
- ADC
- Weakness
- CWE-119 (opens in a new tab)
- Status
- Analyzed
- Updated
- 28 Sept 2026
- Assigner
- 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References 2
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Citrix CVEs
Every Citrix CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-88779 Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability KEV EPSS 0.6% 7.5, high
- CVE-2026-88771 Citrix NetScaler Improper Input Validation Vulnerability KEV EPSS 1% 9.8, critical
- CVE-2026-19490 Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability KEV EPSS 23% 9.8, critical
- CVE-2026-8452 Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability KEV EPSS 1% 9.8, critical
- CVE-2026-3055 Citrix NetScaler Out-of-Bounds Read Vulnerability KEV EPSS 4% 9.8, critical
- CVE-2025-7775 Citrix NetScaler Memory Overflow Vulnerability KEV EPSS 20% 9.8, critical
- CVE-2025-6543 Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability KEV EPSS 11% 9.8, critical
- CVE-2025-5777 Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability KEV EPSS 100% 7.5, high
Beyond this page
Is CVE-2026-88772 in your network?
This page tells you how dangerous CVE-2026-88772 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
CVE-2026-88772 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.
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EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-88772 comes with the devices to patch.
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EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 16 Oct 2026, not the live upstream state.