8.8

CVE-2026-8451: citrix netscaler_application_delivery_controller Out-of-bounds Read

CVSS: 8.8v4.0HighAnalyzed
Published 30-06-2026Last modified 30-06-2026
Open JSON

Vulnerability summary

CVE-2026-8451 is a high (CVSS 8.8) Out-of-bounds Read vulnerability in citrix netscaler_application_delivery_controller. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.7% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v4.0 (CVE.org)
EPSS score
0.50%
0%100%
Low · -15.15 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-06-2026
    PublishedVulnerability first disclosed.
  2. 30-06-2026
    Last modifiedVulnerability information updated.

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

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

-15.15 pp

From 15.65% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Citrix2 products
Netscaler2 products
  • adc≥ 14.1, < 72.61 | ≥ 13.1, < 63.18 | ≥ 14.1 FIPs, < 72.61 | ≥ 13.1 FIPS and NDcPP, < 37.272
  • gateway≥ 14.1, < 72.61 | ≥ 13.1, < 63.18

2 vendors · 4 products

References

1 links