How severe is CVE-2026-88779?

CVE-2026-88779 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-88779 being actively exploited?

Yes. CVE-2026-88779 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-10-04, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2026-88779?

CVE-2026-88779 primarily affects Citrix Netscaler Application Delivery Controller. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-88779?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

When was CVE-2026-88779 published?

CVE-2026-88779 was published on 2026-10-04 and last updated on 2026-10-05.

CVE-2026-88779

CVE-2026-88779 is a high-severity vulnerability in Citrix Netscaler Application Delivery Controller with a CVSS 3.x base score of 7.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-10-04). The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-10-04)
Weakness: CWE-119
Affected product: Citrix Netscaler Application Delivery Controller
Published: 2026-10-04
Last modified: 2026-10-05

Description

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.

Frequently asked questions

What is CVE-2026-88779?: 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.
How severe is CVE-2026-88779?: CVE-2026-88779 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-88779 being actively exploited?: Yes. CVE-2026-88779 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-10-04, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2026-88779?: CVE-2026-88779 primarily affects Citrix Netscaler Application Delivery Controller. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-88779?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
When was CVE-2026-88779 published?: CVE-2026-88779 was published on 2026-10-04 and last updated on 2026-10-05.

References

Affected products (4)

cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*

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