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.
The record classifies CVE-2026-88779 under weakness class CWE-119. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1 day ago.
Severity and exploitation probability
- CVSS v4.0 base score
- 8.7 — High (derived from score)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - EPSS (FIRST)
- 0.2% probability of exploitation in the next 30 days, higher than 18.2% of all scored CVEs
- CISA KEV
- Listed since 2026-10-04, federal remediation deadline 2026-10-07
- Threadlinqs priority
- 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
- Published
- 2026-10-04, last modified 2026-10-05
Is CVE-2026-88779 being exploited?
CISA added CVE-2026-88779 to the Known Exploited Vulnerabilities catalog on 2026-10-04, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-10-07 under BOD 22-01. It currently carries a trending score of 44 in the Threadlinqs vulnerability feed.
Affected products and versions
- NetScaler: ADC, Gateway
How to fix CVE-2026-88779
Because CVE-2026-88779 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-10-07. No vendor patch reference has been recorded for CVE-2026-88779 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-88779
1 tracked threat in the Threadlinqs corpus references CVE-2026-88779, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.