CVE Details
CVE-2026-88772
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Published: 2026-09-27
CVSS: 9.5 CRITICAL
Product: Citrix NetScaler
Due Date: 2026-09-30
Citrix 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
GitHub PoC
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No GitHub PoC data.
FIRST EPSS
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No EPSS data.
Timeline
CVE Stalker
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MITRE
GitHub
FIRST (EPSS)
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References
Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-88772 |
| cveMetadata > | assignerOrgId | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | NetScaler |
| cveMetadata > | dateReserved | 2026-09-10T07:14:57.369Z |
| cveMetadata > | datePublished | 2026-09-27T16:09:56.033Z |
| cveMetadata > | dateUpdated | 2026-09-27T19:56:14.190Z |
| containers > | cna > providerMetadata > orgId | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 |
| containers > | cna > providerMetadata > shortName | NetScaler |
| containers > | cna > providerMetadata > dateUpdated | 2026-09-27T16:09:56.033Z |
| containers > | cna > title | Memory overflow vulnerability leading to Remote Code Execution or Denial of Service |
| containers > | cna > affected > 0 > vendor | Citrix NetScaler |
| containers > | cna > affected > 0 > product | ADC |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > affected > 0 > versions > 0 > version | 0 |
| containers > | cna > affected > 0 > versions > 0 > lessThan | 14.1-73.37 |
| containers > | cna > affected > 0 > versions > 0 > versionType | patch |
| containers > | cna > affected > 0 > versions > 1 > status | affected |
| containers > | cna > affected > 0 > versions > 1 > version | 0 |
| containers > | cna > affected > 0 > versions > 1 > lessThan | 13.1-64.23 |
| containers > | cna > affected > 0 > versions > 1 > versionType | patch |
| containers > | cna > affected > 0 > versions > 2 > status | affected |
| containers > | cna > affected > 0 > versions > 2 > version | 0 |
| containers > | cna > affected > 0 > versions > 2 > lessThan | 14.1-73.37 FIPS |
| containers > | cna > affected > 0 > versions > 2 > versionType | patch |
| containers > | cna > affected > 0 > versions > 3 > status | affected |
| containers > | cna > affected > 0 > versions > 3 > version | 0 |
| containers > | cna > affected > 0 > versions > 3 > lessThan | 13.1.37.279 FIPS and NDcPP |
| containers > | cna > affected > 0 > versions > 3 > versionType | patch |
| containers > | cna > affected > 0 > defaultStatus | unaffected |
| containers > | cna > affected > 1 > vendor | Citrix NetScaler |
| containers > | cna > affected > 1 > product | Gateway |
| containers > | cna > affected > 1 > versions > 0 > status | affected |
| containers > | cna > affected > 1 > versions > 0 > version | 0 |
| containers > | cna > affected > 1 > versions > 0 > lessThan | 14.1-73.37 |
| containers > | cna > affected > 1 > versions > 0 > versionType | patch |
| containers > | cna > affected > 1 > versions > 1 > status | affected |
| containers > | cna > affected > 1 > versions > 1 > version | 0 |
| containers > | cna > affected > 1 > versions > 1 > lessThan | 13.1-64.23 |
| containers > | cna > affected > 1 > versions > 1 > versionType | patch |
| containers > | cna > affected > 1 > defaultStatus | unaffected |
| containers > | cna > descriptions > 0 > lang | en |
| containers > | cna > descriptions > 0 > value | 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 |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > descriptions > 0 > supportingMedia > 0 > value | Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.<p>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 <span>leading to Remote Code Execution or Denial of Service</span></p> |
| containers > | cna > references > 0 > url | 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_88778 |
| containers > | cna > metrics > 0 > format | CVSS |
| containers > | cna > metrics > 0 > scenarios > 0 > lang | en |
| containers > | cna > metrics > 0 > scenarios > 0 > value | GENERAL |
| containers > | cna > metrics > 0 > cvssV4_0 > attackVector | NETWORK |
| containers > | cna > metrics > 0 > cvssV4_0 > attackComplexity | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > attackRequirements | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > privilegesRequired | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > userInteraction | NONE |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnConfidentialityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > subConfidentialityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnIntegrityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > subIntegrityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnAvailabilityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > subAvailabilityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV4_0 > exploitMaturity | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > Safety | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > Automatable | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > Recovery | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > valueDensity | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > vulnerabilityResponseEffort | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > providerUrgency | NOT_DEFINED |
| containers > | cna > metrics > 0 > cvssV4_0 > version | 4.0 |
| containers > | cna > metrics > 0 > cvssV4_0 > baseSeverity | CRITICAL |
| containers > | cna > metrics > 0 > cvssV4_0 > baseScore | 9.5 |
| containers > | cna > metrics > 0 > cvssV4_0 > vectorString | 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 |
| containers > | cna > source > discovery | UNKNOWN |
| containers > | cna > x_generator > engine | Vulnogram 1.0.4 |
| containers > | adp > 0 > problemTypes > 0 > descriptions > 0 > type | CWE |
| containers > | adp > 0 > problemTypes > 0 > descriptions > 0 > cweId | CWE-119 |
| containers > | adp > 0 > problemTypes > 0 > descriptions > 0 > lang | en |
| containers > | adp > 0 > problemTypes > 0 > descriptions > 0 > description | CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer |
| containers > | adp > 0 > references > 0 > url | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88772 |
| containers > | adp > 0 > references > 0 > tags > 0 | government-resource |
| containers > | adp > 0 > metrics > 0 > other > type | ssvc |
| containers > | adp > 0 > metrics > 0 > other > content > timestamp | 2026-09-27T19:55:41.617307Z |
| containers > | adp > 0 > metrics > 0 > other > content > id | CVE-2026-88772 |
| containers > | adp > 0 > metrics > 0 > other > content > options > 0 > Exploitation | active |
| containers > | adp > 0 > metrics > 0 > other > content > options > 1 > Automatable | no |
| containers > | adp > 0 > metrics > 0 > other > content > options > 2 > Technical Impact | total |
| containers > | adp > 0 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 0 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 0 > title | CISA ADP Vulnrichment |
| containers > | adp > 0 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 0 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-09-27T19:56:14.190Z |