CVE-2026-88772 kev in the critical feed json
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service
published 2026-09-27 42 d ago modified 2026-09-28 41 d ago also EUVD-2026-87959
- cvss
- 8.1
- version 3.1, NVD
- cisa kev
- Exploited
- added 2026-09-27
- epss
- 76.6%
- EPSS 76.6% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 1
- Metasploit
Summary
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
Patch / fix
cisa 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.
- Citrix NetScaler ADC 13.1-64.23, 13.1.37.279 FIPS and NDcPP, 14.1-73.37, 14.1-73.37 FIPS
- Citrix NetScaler Gateway 13.1-64.23, 14.1-73.37
Timeline
- CISA SSVC: exploitation active
- First public exploit (Metasploit exploit/freebsd/http/citrix_netscaler_cve_2026_88771)
- Added to CISA KEV
- Published
- CISA patch deadline
Known exploited
- Added
- 43 d ago
- Patch by
- 2026-09-30 (40 d ago)
- Ransomware
- Not known
- 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.
- Vendor, product
- Citrix, NetScaler
- CISA name
- Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 43 d ago
Exploit prediction
76.57% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/freebsd/http/citrix_netscaler_cve_2026_88771 Citrix NetScaler Unauthenticated Login Log Command Injection (CVE-2026-88771) metasploit exploit, normal rank, 2026-09-27
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.5 | 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 |
| CNA | 4.0 | 9.5 | 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 |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Citrix NetScaler ADC
- Citrix NetScaler Gateway
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- Technology feeds
References
-
support.citrix.com
/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_
vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88772
government-resource, us-government-resource
Sources
- CVE List CVE-2026-88772
- NVD CVE-2026-88772
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.