CVE-2026-88772Memory overflow vulnerability leading to Remote Code Execution or Denial of Service
Updated under an hour ago ()
Does this affect you?
It affects Citrix NetScaler ADC and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Sep 27, 2026; federal agencies had to remediate by Sep 30, 2026. Treat that date as your deadline.
Do this next
Free account, 1 product
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
- CVSS
- 9.5 CRITICAL (v4.0, 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
- Weakness (CWE)
- CWE-119
- Known exploited
- Added to CISA KEV Sep 27, 2026; federal remediation due Sep 30, 2026Apply 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.
- EPSS (exploitation in the next 30 days)
- 1.30% (percentile 70)
- Assigned by
- NetScaler
- NVD analysis
- Analyzed
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Citrix NetScaler ADC citrix_netscaler:adc (from the name) | before 14.1-73.37; before 13.1-64.23; before 14.1-73.37 FIPS; before 13.1.37.279 FIPS and NDcPP | CNA record |
Citrix NetScaler Gateway citrix_netscaler:gateway (from the name) | before 14.1-73.37; before 13.1-64.23 | CNA record |
citrix netscaler_application_delivery_controller citrix:netscaler_application_delivery_controller | from 13.1 before 13.1-64.23; from 13.1 before 13.1.37.279; from 13.1 before 13.1.37.279; from 14.1 before 14.1-73.37; from 14.1-66.68 through 14.1-73.37 | NVD |
citrix netscaler_gateway citrix:netscaler_gateway | from 13.1 before 13.1-64.23; from 14.1 before 14.1-73.37 | NVD |
References
- https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88772us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.