Out-of-bounds Read in Citrix Netscaler Application Delivery Controller
CVE-2026-10817
Insufficient input validation leading to memory overread in NetScaler ADC and NetScaler Gateway if the TCP TimeStamp is enabled in TCP Profile and is associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (44.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Citrix Netscaler Application Delivery Controller — versions 14.1-66.68
- Citrix Netscaler Gateway
- Netscaler Adc — versions 14.1, 13.1, 14.1 FIPS
- Netscaler Gateway — versions 14.1, 13.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-10817?
- CVE-2026-10817 is a high-severity vulnerability in Citrix Netscaler Application Delivery Controller, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-06-30.
- How severe is CVE-2026-10817?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-10817 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.