Detections
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CVE-2026-88772

critical

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

References

https://www.theregister.com/security/2026/10/09/citrix-gives-netscaler-admins-another-critical-reason-to-patch/5302212

https://www.securityweek.com/citrix-urges-immediate-patching-of-critical-netscaler-vulnerability/

https://www.bleepingcomputer.com/news/security/citrix-warns-admins-to-patch-new-netscaler-rce-flaw-immediately/

https://thehackernews.com/2026/10/citrix-patches-critical-netscaler-flaw.html

https://securityaffairs.com/200670/security/cve-2026-107406-citrix-fixes-critical-netscaler-adc-and-gateway-vulnerability.html

https://www.theregister.com/security/2026/10/05/citrix-netscaler-security-snafus-get-even-worse-amid-more-0-day-reports/5301232

https://www.helpnetsecurity.com/2026/10/05/cisa-flags-new-exploited-netscaler-flaw-as-attackers-crash-appliances-cve-2026-88779/

https://www.databreachtoday.com/citrix-patches-yet-another-under-fire-zero-day-in-netscaler-a-33017

https://therecord.media/us-australia-warn-of-latest-citrix-vulnerability

https://thehackernews.com/2026/10/new-netscaler-zero-day-exploited-in.html

https://www.securityweek.com/exploitation-of-citrix-netscaler-zero-day-hits-appliances-patched-days-earlier/

https://thehackernews.com/2026/10/critical-fortimail-zero-day-flaw.html

https://thehackernews.com/2026/10/citrix-netscaler-post-exploitation.html

https://databreaches.net/2026/10/01/suspected-state-hackers-exploited-citrix-netscaler-for-weeks-50000-devices-may-still-be-exposed/

https://www.securityweek.com/government-finance-orgs-targeted-in-weeks-long-netscaler-zero-day-attacks/

https://www.helpnetsecurity.com/2026/09/30/cve-2026-88772-netscaler-exploitation-zero-day/

https://thehackernews.com/2026/09/attackers-exploit-netscaler-flaw-for.html

https://www.theregister.com/security/2026/09/29/custom-malware-used-in-citrix-0-day-attacks-targeting-govt-banks-professional-services/5299867

https://www.hipaajournal.com/citrix-zero-day-vulnerabilities-exploited-sept-2026/

https://www.helpnetsecurity.com/2026/09/29/netscaler-zero-day-exploitation-escalates-into-mass-attacks-cve-2026-88771/

https://www.bleepingcomputer.com/news/security/hackers-exploit-citrix-netscaler-zero-day-to-deploy-web-shells/

https://cyberscoop.com/citrix-netscaler-zero-day-attacks-three-weeks-undetected/

https://www.theregister.com/security/2026/09/28/certainties-in-life-death-taxes-and-critical-citrix-vulns-under-attack/5299369

https://www.sophos.com/en-us/blog/citrix-netscaler-cve-2026-88771-cve-2026-88772-in-active-exploitation

https://www.securityweek.com/citrix-confirms-2-netscaler-zero-days-after-admins-pulled-the-plug/

https://www.infosecurity-magazine.com/news/citrix-patches-critical-zero-days/

https://www.helpnetsecurity.com/2026/09/28/citrix-netscaler-rce-zero-days-exploited-for-weeks-cve-2026-88771-cve-2026-88772/

https://www.databreachtoday.com/hackers-hit-netscaler-zero-days-before-citrix-patched-a-32959

https://www.darkreading.com/vulnerabilities-threats/netscaler-zero-days-chaos-citrix

https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-exploited-citrix-flaws-by-wednesday/

https://therecord.media/us-uk-warn-of-citrix-netscaler-zero-day-bug

https://thehackernews.com/2026/09/cisa-says-attackers-are-exploiting-two.html

https://securityaffairs.com/199891/hacking/u-s-cisa-adds-citrix-netscaler-flaws-to-its-known-exploited-vulnerabilities-catalog.html

https://labs.watchtowr.com/oh-look-the-foot-gun-went-off-again-citrix-netscaler-preauth-command-injection-cve-2026-88771/

https://cyberscoop.com/citrix-zero-days-delayed-disclosure/

https://cloud.google.com/blog/topics/threat-intelligence/defending-against-active-exploitation-of-citrix-netscaler-adc-and-gateway-appliances/

https://www.cisa.gov/news-events/alerts/2026/09/27/critical-zero-day-vulnerabilities-exploited-citrix-netscaler-adc-gateway

https://thehackernews.com/2026/09/warning-two-unpatched-citrix-netscaler.html

https://securityaffairs.com/199873/security/citrix-confirmed-two-new-netscaler-flaws-exploited-as-zero-day.html

https://www.cisa.gov/news-events/alerts/2026/09/27/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://www.bleepingcomputer.com/news/security/citrix-admins-warned-to-shut-down-netscalers-over-2-exploited-zero-days/

https://github.com/fr3dux/dark-threat-radar

https://github.com/FollowerSeize/CVE-2026-88772-POC

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88772

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-87959

Details

Source: Mitre, NVD

Published: 2026-09-27

Updated: 2026-09-28

Named Vulnerability: PitScalerKnown Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 9.5

Vector: 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

Severity: Critical

EPSS

EPSS: 0.01301

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest