CVE-2026-88772
- EPSS 1.3%
- Published 27.09.2026 16:09:56
- Last modified 28.09.2026 12:26:47
- Findings
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service
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
Login27.09.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
VulnerabilityCitrix 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
DescriptionApply 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.
Required actions| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 1.3% | 0.693 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| NIST | 8.1 | 2.2 | 5.9 |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
|
| 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 | 9.5 | 0 | 0 |
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.