CVE-2026-8451

HIGHCVSS 7.5/10EPSS 0.53%

Last modified

CVE-2026-8451 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1
7.5/10

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

CVSS 4.0
8.8/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.53%

40.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CitrixNetscaler Application Delivery Controller< 13.1-37.272
CitrixNetscaler Application Delivery Controller>= 13.1, < 13.1-63.18
CitrixNetscaler Application Delivery Controller>= 14.1, < 14.1-72.61
CitrixNetscaler Application Delivery Controller14.1-66.68
CitrixNetscaler Gateway>= 13.1, < 13.1-63.18
CitrixNetscaler Gateway>= 14.1, < 14.1-72.61

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-8451?
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
How severe is CVE-2026-8451?
CVE-2026-8451 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.
How do I fix CVE-2026-8451?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST