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cve recordhighexploit reported

CVE-2026-8451

citrix · netscaler application delivery controller

Published
CVSS7.5
Severityhigh
WeaknessCWE-125
EPSS0.50%41.8th percentile
Exploited1 KEV source

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

patch window

Called exploited 1 day after disclosure.

Measured from the CVE publication date to the earliest of 1 KEV catalogue that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listing1d
  3. Last sighting5d

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources1 of 3
Listings differ by—
Strongest claimconfirmed

This rests on a single catalogue. No second catalogue corroborates the claim that it is being exploited. CIRCL is an aggregator and is not counted.

Public exploitation evidence

3 public reports collected from VulnCheck and CIRCL, first on Jul 1, 2026. Each links to its original source. We have not verified them.

Description

Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP

References

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Our coverage of CVE-2026-8451

CVE-2026-19489critical

Critical NetScaler Flaw Can Bypass Authentication on Certain Gateway and AAA Servers

Citrix has issued urgent security updates for its NetScaler ADC and NetScaler Gateway products to remediate two significant vulnerabilities. The more critical of these, tracked as CVE-2026-19490, carries a CVSS score of 9.3 and enables an authentication bypass. This flaw specifically impacts certain configurations, particularly those where the NetScaler appliance functions as a Gateway or an…

CVE-2026-46817high

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