SB2026100531 - Buffer overflow in Citrix Netscaler
Published: October 5, 2026
Security Bulletin ID
SB2026100531
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2026-88779) Exploited
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper restriction of operations within the bounds of a memory buffer in SAML authentication functionality when processing SAML authentication data. A remote attacker can trigger the memory overflow to cause a denial of service.
The affected appliance must be configured as a SAML service provider or SAML identity provider.
Remediation
Install update from vendor's website.