CVE-2026-88772Memory 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

9.5 CRITICALEPSS 76.56%⚡ Known Exploited (CISA KEV)NVD: Published

Last updated: 2026-09-28 03:55 UTC

OverviewCVSS details

9.5CRITICALCVSS 4.0

Score source: NetScaler (CNA)
NVD status: Published
Published: Sep 27, 2026
Assigner: NetScaler

Affected

ADC (Citrix NetScaler)

Versions: before 14.1-73.37 · before 13.1-64.23
Fixed in: 14.1-73.37, 13.1-64.23, 14.1-73.37 FIPS

+1 more product →

Exploitation

Public exploit: None listed
CISA KEV: Listed · Sep 27, 2026
KEV due date: Sep 30, 2026
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

76.56%chance of exploitation in 30 days

Higher than 99.54% of CVEs

CVSS 4.0 · NetScaler (CNA)

9.5Critical

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

Attack vector: Network
Attack complexity: High
Attack requirements: None
Privileges required: None
User interaction: None
Confidentiality impact: High
Integrity impact: High
Availability impact: High
Confidentiality (other systems): High
Integrity (other systems): High
Availability (other systems): High

NVD status: Published

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.5	CRITICAL	4.0NetScaler (CNA)	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

Details

CVE ID: CVE-2026-88772
Status: Published
Assigner (CNA): NetScaler
Published: Sep 27, 2026
Last modified: 2026-09-28 03:55 UTC
Weaknesses: CWE-119

Sources

NVD (unavailable at last refresh)
CVE.org
CISA KEV
FIRST EPSS

Refreshed hourly from the sources above. Last fetched 2026-11-07 16:57 UTC.