High severity · published Jun 30, 2026
CVE-2026-10817
Insufficient input validation leading to memory overread
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
NetScaler ADC · Citrix
before 13.1-37.272; before 13.1-37.272; 13.1 before 13.1-63.18; 14.1 before 14.1-72.61; 14.1-66.68 · source: NVD
AD
ADC · NetScaler
14.1 before 72.61; 13.1 before 63.18; 14.1 FIPS before 72.61; 13.1 FIPS and NDcPP before 37.272 · source: vendor
GA
Gateway · NetScaler
14.1 before 72.61; 13.1 before 63.18 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-10817
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-10817
Vendor Advisory
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604
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