CVE-2026-88779
highpriority · act · 90OT risk · criticalKEV · exploitedEU KEV · CNWEPSS 0.006 · 48 %ileDENLRUUSadded 2026-10-04remediate by 2026-10-07
required action Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
EU KEVflagged by CNWreported 2026-10-02patched 2026-10-04
Memory overflow vulnerability leading to Denial of Service.
EPSS · scored 2026-10-22
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (29)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- NCSC-2026-0399Kwetsbaarheid verholpen in Citrix NetScaler ADC en NetScaler GatewayNL2026-10-04csaf · ncsc_nlNL
Citrix heeft een kwetsbaarheid verholpen in NetScaler ADC en NetScaler Gateway.
- WID-SEC-W-2026-3719Citrix NetScaler ADC und Gateway: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-10-04csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Citrix Systems NetScaler ADC und Gateway ausnutzen, um einen Denial of Service Angriff durchzuführen.
also known as (1)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (3) nvd
External citations — patches, advisories, analysis.
- https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/MitigationVendor Advisory
- https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779US Government Resource
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