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CVE-2026-8451

Insufficient input validation leading to memory overread

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

Timeline

  1. ID reserved

    By NetScaler

  2. · 48 days later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-8451, by who scored it
Scored byCVSSScoreVector
NetScalerCNA (assigner)4.0High8.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N
NVDNVD · Analyzed4.0High8.8CVSS: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 (exploitation in 30 days)
14.2% · top 3.4% of all CVEs (11 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Affected products

  • NetScaler · ADC

    • affected 14.1 – < 72.61
    • affected 13.1 – < 63.18
    • affected 14.1 FIPs – < 72.61
    • affected 13.1 FIPS and NDcPP – < 37.272

  • NetScaler · Gateway

    • affected 14.1 – < 72.61
    • affected 13.1 – < 63.18

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .