MSRXCVE-2026-88779
CVE-2026-88779
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
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.
CVSS 4.0 · CNA
chance of exploitation in the next 30 days (EPSS; higher than 95% of CVEs)
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.
Scores
Affected products
- citrix netscaler application delivery controller: ≥ 13.1, < 13.1-37.282; ≥ 13.1, < 13.1-64.28; ≥ 14.1, < 14.1-73.41; ≥ 14.1-66.68, ≤ 14.1-73.41
- citrix netscaler gateway: ≥ 13.1, < 13.1-64.28; ≥ 14.1, < 14.1-73.41
Weakness: CWE-119
3 references (advisories, patches, write-ups)
- https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174 · Vendor Advisory
- https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/ · Mitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779 · US Government Resource
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.