Vulnerability-Lookup

CVE-2026-88779 (GCVE-0-2026-88779)

Vulnerability from cvelistv5 – Published: 2026-10-04 02:35 – Updated: 2026-10-04 14:48

ENISA

Title

Memory overflow vulnerability leading to Denial of Service

Summary

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-04 14:37 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

NetScaler mitre root Scorecard

References

2 references

URL	Tags
https://support.citrix.com/support-home/kbsearch/…
https://community.citrix.com/techzone-blogs/110_s…	vendor-advisory

Impacted products

2 products

Vendor	Product	Version	CPE status
NetScaler	ADC	Affected: 0 , < 14.1-73.41 (Patch) Affected: 0 , < 13.1-64.28 (Patch) Affected: 0 , < 14.1-73.41 FIPS (Patch) Affected: 0 , < 13.1-37.282 (Patch)	guessed
NetScaler	Gateway	Affected: 0 , < 14.1-73.41 (Patch) Affected: 0 , < 13.1-64.28 (Patch)	guessed

Date Public

2026-10-04 02:19

ENISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: a322c452-ef62-4881-96bf-23b1fb7c8b2b

Vulnerability ID: CVE-2026-88779

Status: Confirmed

Status Updated: 2026-10-02 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-10-02

Asserted: 2026-10-02

Scope

Notes: Affected: Citrix / Citrix NetScaler ADC, Citrix NetScaler Gateway | Description: Memory overflow vulnerability leading to Denial of Service. | Patched since: 2026/10/04 | Exploitation type: unknown | CWEs: CWE-119 | Origin source: CNW | Notes: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174

Evidence

Type: Csirt Report

Signal: Successful Exploitation

Confidence: 75%

Source: enisa-cnw-kev

Details

Cwes	CWE-119
Euvd	EUVD-2026-92065
Notes	https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174
Catalog	ENISA / EU CSIRTs Network (CNW) KEV JSON
Product	Citrix NetScaler ADC, Citrix NetScaler Gateway
Datereported	2026/10/02
Originsource	CNW
Patchedsince	2026/10/04
Vendorproject	Citrix
Exploitationtype	unknown
Vulnerabilityname
Threatactorsexploiting

References

Created: 2026-10-04 11:00 UTC | Updated: 2026-10-04 11:00 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-88779

Vulnerability from fkie_nvd - Published: 2026-10-04 04:16 - Updated: 2026-10-04 04:16

ENISA

Severity

8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	50a63c94-1ea7-4568-8c11-eb79e7c5a2b5	https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-04T04:16:43.680",
  "references": [
    {
      "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
      "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174"
    }
  ],
  "sourceIdentifier": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
  "vulnStatus": "Received"
}

GHSA-56R3-M27M-8P62

Vulnerability from github – Published: 2026-10-04 06:34 – Updated: 2026-10-04 06:34

Details

Vulnerability in NetScaler ADC and NetScaler Gateway.

This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.

Severity

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-88779"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-04T04:16:43Z",
    "severity": "HIGH"
  },
  "details": "Vulnerability in NetScaler ADC and NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.",
  "id": "GHSA-56r3-m27m-8p62",
  "modified": "2026-10-04T06:34:12Z",
  "published": "2026-10-04T06:34:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88779"
    },
    {
      "type": "WEB",
      "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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",
      "type": "CVSS_V4"
    }
  ]
}

NCSC-2026-0399

Vulnerability from csaf_ncscnl - Published: 2026-10-04 11:19 - Updated: 2026-10-04 11:19

Summary

Kwetsbaarheid verholpen in Citrix NetScaler ADC en NetScaler Gateway

Scope

1 vulnerability in this advisory, including CVE-2026-88779.

CVE-2026-88779

A memory overflow vulnerability in NetScaler ADC and NetScaler Gateway versions prior to 14.1-73.41 and 13.1-64.28 can lead to a Denial of Service (DoS) condition and other security issues.

Known affected: 2 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-88779 (GCVE-0-2026-88779)

ENISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Csirt Report Successful Exploitation Confidence: 75% Source: enisa-cnw-kev

Details

References

FKIE_CVE-2026-88779

GHSA-56R3-M27M-8P62

NCSC-2026-0399

Tags

Sightings

Nomenclature

Related by attack behaviour