CVE-2026-88771
CRITICALImproper 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.
CVSS v3.1 Score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HRelated Intelligence (15)
Suspected State Hackers Exploited Citrix NetScaler for Weeks. 50,000 Devices May Still Be Exposed.
Datawater reports: Two critical NetScaler zero-days, CVE-2026-88771 and CVE-2026-88772, were used against organizations worldwide before a patch existed. CISA’s deadline is today. Patching alone will not tell you whether you were already breached. Threat level: Critical What: Two unauthenticated remote-code-execution flaws in Citrix NetScaler ADC and NetScaler Gateway, both CVSS 9.5. Status: Explo
Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild (Updated September 30)
Unit 42 is aware of possible 0-day activity against NetScaler devices. Citrix reports CVE-2026-88771, CVE-2026-88772 have been exploited in the wild. The post Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild (Updated September 30) appeared first on Unit 42 .
Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day Attacks
Several security firms have confirmed seeing exploitation of the NetScaler vulnerabilities CVE-2026-88771 and CVE-2026-88772. The post Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day Attacks appeared first on SecurityWeek .
Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild
Unit 42 is aware of possible 0-day activity against NetScaler devices. Citrix reports CVE-2026-88771, CVE-2026-88772 have been exploited in the wild. The post Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild appeared first on Unit 42 .
Oh Look, The Foot Gun Went Off Again (Citrix NetScaler PreAuth Command Injection CVE-2026-88771) - watchTowr Labs
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Zero-Day Exploitation of Citrix NetScaler ADC and Gateway: CVE-2026-88771 and CVE-2026-88772
Overview On September 27, 2026, Citrix disclosed eight new vulnerabilities affecting NetScaler ADC and NetScaler Gateway, including two critical remote code execution (RCE) vulnerabilities: CVE-2026-88771 and CVE-2026-88772 . Both of these RCE vulnerabilities carry a critical CVSSv4 score of 9.5, and both have been confirmed as being actively exploited in the wild as zero-days prior to the vendor
NetScaler admins told to patch critical zero-days in ADC and Gateway now
Citrix NetScaler ADC and NetScaler Gateway users should take their systems offline and patch them immediately, they were told over the weekend, as news emerged of two critical unauthenticated remote code execution zero-day vulnerabilities in the products under active attack. “ Monday will be too late ,” watchtower CEO Benjamin Harris wrote in a LinkedIn post on Sunday. Citrix subsequently confirme
Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the Plug
Citrix has released patches for the critical NetScaler vulnerabilities tracked as CVE-2026-88771 and CVE-2026-88772. The post Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the Plug appeared first on SecurityWeek .
CISA Says Attackers Are Exploiting Two Critical Citrix NetScaler Flaws Globally
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Sunday added two critical Citrix NetScaler ADC and Gateway flaws to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation. The vulnerabilities are listed below - CVE-2026-88771 (CVSS score: 9.5) - An improper input validation vulnerability that could allow an unauthenticated attacker to
AL26-024 - Critical vulnerabilities affecting Citrix NetScaler ADC and NetScaler Gateway – CVE-2026-88771 and CVE-2026-88772
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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
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NVD CRITICAL: CVE-2026-88771 — Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetSc...
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.
Citrix confirms two NetScaler RCE zero-days exploited in attacks
Citrix has confirmed that two critical NetScaler remote code execution vulnerabilities, tracked as CVE-2026-88771 and CVE-2026-88772, are being exploited in attacks and that it has released security updates to fix the flaws. [...]
Critical Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC, Gateway
<p>CISA is amplifying Citrix’s disclosure of eight new vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway products: <a href="https://www.cve.org/CVERecord?id=CVE-2026-88771">CVE-2026-88771</a>, <a href="https://www.cve.org/CVERecord?id=CVE-2026-88772">CVE-2026-88772</a>, <a href="https://www.cve.org/CVERecord?id=CVE-2026-88773">CVE-2026-88773</a>, <a href="https://www.cve.
CISA KEV: Citrix NetScaler — Citrix NetScaler Improper Input Validation Vulnerability
Citrix NetScaler ADC and NetScaler Gateway contain an improper input validation vulnerability that could allow an unauthenticated attacker to execute arbitrary commands.