--- title: "CVE-2026-88772: Memory overflow vulnerability leading… | CubePath" description: "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…" language: en source: https://cubepath.com/security/cve/CVE-2026-88772 --- # CVE-2026-88772: Memory overflow vulnerability leading… | CubePath ## Description 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 Official description from the CVE record, published by NetScaler. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-88772) ## Key data ### CVSS 4.0 Critical 9.5 Score published by NetScaler in the CVE record. 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 | Metric | Value | What it means | | ----------------------------------- | ------- | -------------------------------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | High | The attacker has to evade or get around security controls that are in place, which takes target-specific work. | | Attack requirements | None | The attack works without any special deployment or execution conditions. | | Privileges required | None | No account or privileges are needed. | | User interaction | None | No action from any user is needed. | | Vulnerable system: confidentiality | High | Serious or total effect on the secrecy of data. | | Vulnerable system: integrity | High | Serious or total effect on the trustworthiness of data. | | Vulnerable system: availability | High | Serious or total effect on availability. | | Subsequent systems: confidentiality | High | Serious or total effect on other systems' data secrecy. | | Subsequent systems: integrity | High | Serious or total effect on other systems' data trustworthiness. | | Subsequent systems: availability | High | Serious or total effect on other systems' availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.76566 (76.6% probability) Percentile 99.5% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability Added to the catalog Sep 27, 2026 Federal due date Sep 30, 2026 ### CISA assessment as of Sep 27, 2026 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-119](https://cwe.mitre.org/data/definitions/119.html) Improper Restriction of Operations within the Bounds of a Memory Buffer ## Affected products Products listed in the CVE record, as the CNA published them. - Citrix NetScaler ADC - affected: before 14.1-73.37 - affected: before 13.1-64.23 - affected: before 14.1-73.37 FIPS - affected: before 13.1.37.279 FIPS and NDcPP - Citrix NetScaler Gateway - affected: before 14.1-73.37 - affected: before 13.1-64.23 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [support.citrix.com/support-home/kbsearch/article?articleNum…](https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix%5FNetScaler%5FADC%5Fand%5FCitrix%5FNetScaler%5FGateway%5FSecurity%5FBulletin%5Ffor%5FCVE%5F2026%5F88771%5FCVE%5F2026%5F88772%5FCVE%5F2026%5F88773%5FCVE%5F2026%5F88774%5FCVE%5F2026%5F88775%5FCVE%5F2026%5F88776%5FCVE%5F2026%5F88777%5Fand%5FCVE%5F2026%5F88778) ## Timeline 1. ID reserved Sep 10, 2026 2. Added to CISA KEV Sep 27, 2026 3. Record published Sep 27, 2026 4. Record last updated Sep 28, 2026 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:53 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)