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CERTFR-2026-AVI-1235
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans Citrix NetScaler ADC et Gateway. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.
Citrix indique que les vulnérabilités CVE-2026-88771 et CVE-2026-88772 sont activement exploitées.
L'éditeur indique que si les correctifs n'ont pas été installés, tous les équipements sont vulnérables dans leur configuration par défaut.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Citrix | NetScaler ADC | Citrix NetScaler ADC versions 14.1-FIPS antérieures à 14.1-73.37 FIPS | ||
| Citrix | NetScaler ADC | Citrix NetScaler ADC versions 13.1-FIPS antérieures à 13.1-NDcPP 13.1.37.279 | ||
| Citrix | NetScaler Gateway | NetScaler Gateway versions 13.1.x antérieures à 13.1-64.23 | ||
| Citrix | NetScaler Gateway | NetScaler Gateway versions 14.1.x antérieures à 14.1-73.37 | ||
| Citrix | NetScaler ADC | Citrix NetScaler ADC versions 14.1.x antérieures à 14.1-73.37 | ||
| Citrix | NetScaler ADC | Citrix NetScaler ADC versions 13.1.x antérieures à 13.1-64.23 |
References
| Title | Publication Time | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Citrix NetScaler ADC versions 14.1-FIPS ant\u00e9rieures \u00e0 14.1-73.37 FIPS",
"product": {
"name": "NetScaler ADC",
"vendor": {
"name": "Citrix",
"scada": false
}
}
},
{
"description": "Citrix NetScaler ADC versions 13.1-FIPS ant\u00e9rieures \u00e0 13.1-NDcPP 13.1.37.279",
"product": {
"name": "NetScaler ADC",
"vendor": {
"name": "Citrix",
"scada": false
}
}
},
{
"description": "NetScaler Gateway versions 13.1.x ant\u00e9rieures \u00e0 13.1-64.23",
"product": {
"name": "NetScaler Gateway",
"vendor": {
"name": "Citrix",
"scada": false
}
}
},
{
"description": "NetScaler Gateway versions 14.1.x ant\u00e9rieures \u00e0 14.1-73.37",
"product": {
"name": "NetScaler Gateway",
"vendor": {
"name": "Citrix",
"scada": false
}
}
},
{
"description": "Citrix NetScaler ADC versions 14.1.x ant\u00e9rieures \u00e0 14.1-73.37",
"product": {
"name": "NetScaler ADC",
"vendor": {
"name": "Citrix",
"scada": false
}
}
},
{
"description": "Citrix NetScaler ADC versions 13.1.x ant\u00e9rieures \u00e0 13.1-64.23",
"product": {
"name": "NetScaler ADC",
"vendor": {
"name": "Citrix",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-88777",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88777"
},
{
"name": "CVE-2026-88776",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88776"
},
{
"name": "CVE-2026-88771",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88771"
},
{
"name": "CVE-2026-88772",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88772"
},
{
"name": "CVE-2026-88775",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88775"
},
{
"name": "CVE-2026-88774",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88774"
},
{
"name": "CVE-2026-88773",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88773"
},
{
"name": "CVE-2026-88778",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-88778"
}
],
"initial_release_date": "2026-09-28T00:00:00",
"last_revision_date": "2026-09-28T00:00:00",
"links": [
{
"title": "Billet de blogue Citrix du 27 septembre 2026",
"url": "https://community.citrix.com/techzone-blogs/110_security-updates/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve-2026-88771-through-cve-2026-88778/#Indicators_of_Compromise__cabcb4"
}
],
"reference": "CERTFR-2026-AVI-1235",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-09-28T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Citrix NetScaler ADC et Gateway. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0 distance et un contournement de la politique de s\u00e9curit\u00e9.\n\nCitrix indique que les vuln\u00e9rabilit\u00e9s CVE-2026-88771 et CVE-2026-88772 sont activement exploit\u00e9es.\n\nL\u0027\u00e9diteur indique que si les correctifs n\u0027ont pas \u00e9t\u00e9 install\u00e9s, tous les \u00e9quipements sont vuln\u00e9rables dans leur configuration par d\u00e9faut.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Citrix NetScaler ADC et Gateway",
"vendor_advisories": [
{
"published_at": "2026-09-27",
"title": "Bulletin de s\u00e9curit\u00e9 Citrix CTX697096",
"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096\u0026articleURL=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"
}
]
}
CVE-2026-88775 (GCVE-0-2026-88775)
Vulnerability from cvelistv5
Published
2026-09-27 16:21
Modified
2026-09-29 15:15
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Memory overflow 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 Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Citrix NetScaler | ADC |
Version: 0 Version: 0 Version: 0 Version: 0 |
|||||||
|
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CVE-2026-88778 (GCVE-0-2026-88778)
Vulnerability from cvelistv5
Published
2026-09-27 16:43
Modified
2026-09-29 16:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-342 - Predictable exact value from previous values
Summary
Predictable exact value from previous values 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.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Citrix NetScaler | ADC |
Version: 0 Version: 0 Version: 0 Version: 0 |
|||||||
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CVE-2026-88777 (GCVE-0-2026-88777)
Vulnerability from cvelistv5
Published
2026-09-27 16:37
Modified
2026-09-29 21:01
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Memory overflow vulnerability 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 unpredictable or erroneous behavior or Denial of Service
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Citrix NetScaler | ADC |
Version: 0 Version: 0 Version: 0 Version: 0 |
|||||||
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CVE-2026-88772 (GCVE-0-2026-88772)
Vulnerability from cvelistv5
Published
2026-09-27 16:09
Modified
2026-09-28 03:55
Severity ?
VLAI Severity ?
EPSS score ?
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
Impacted products
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CVE-2026-88771 (GCVE-0-2026-88771)
Vulnerability from cvelistv5
Published
2026-09-27 16:02
Modified
2026-09-29 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper input validation
Summary
Improper input validation 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 an unauthenticated attacker to execute arbitrary commands.
References
Impacted products
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CVE-2026-88773 (GCVE-0-2026-88773)
Vulnerability from cvelistv5
Published
2026-09-27 16:20
Modified
2026-09-29 15:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Summary
Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') 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 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.
References
Impacted products
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CVE-2026-88776 (GCVE-0-2026-88776)
Vulnerability from cvelistv5
Published
2026-09-27 16:36
Modified
2026-09-29 16:06
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Memory overflow vulnerability 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 unpredictable or erroneous behavior or Denial of Service
References
Impacted products
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| Citrix NetScaler | ADC |
Version: 0 Version: 0 Version: 0 Version: 0 |
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CVE-2026-88774 (GCVE-0-2026-88774)
Vulnerability from cvelistv5
Published
2026-09-27 16:14
Modified
2026-09-29 15:24
Severity ?
VLAI Severity ?
EPSS score ?
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 a feature policy bypass due to improper HTTP URL based expression usage.
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Citrix NetScaler | ADC |
Version: 0 Version: 0 Version: 0 Version: 0 |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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