8.8

CVE-2026-19489: netscaler adc Classic Buffer Overflow

CVSS: 8.8v4.0HighAwaiting analysis
Published 19-08-2026Last modified 20-08-2026
Open JSON

Vulnerability summary

CVE-2026-19489 is a high (CVSS 8.8) Classic Buffer Overflow vulnerability in netscaler adc. EPSS estimates a 3.19% chance of exploitation in the next 30 days, higher than 87.9% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v4.0 (CVE.org)
EPSS score
3.19%
0%100%
Low · +2.81 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-08-2026
    PublishedVulnerability first disclosed.
  2. 20-08-2026
    Last modifiedVulnerability information updated.

Description

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

3.19%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

+2.81 pp

From 0.39% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.19%

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

Netscaler2 products
  • adc≥ 14.1, ≤ 73.32 | ≥ 13.1, ≤ 63.21
  • gateway≥ 14.1, ≤ 73.32 | ≥ 13.1, ≤ 63.21

1 vendor · 2 products

References

1 links