SB2026091654 - Multiple vulnerabilities in IBM SPSS Analytic Server

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Main Vulnerability Database SB2026091654

SB2026091654 - Multiple vulnerabilities in IBM SPSS Analytic Server

Published: September 16, 2026

Security Bulletin ID SB2026091654
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2026-75595)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass mTLS requirements.

The vulnerability exists due to an incorrect offset check in io.netty.handler.ssl.SslClientHelloHandler#decode when parsing a fragmented TLS ClientHello whose handshake header spans multiple records. A remote attacker can send a specially crafted fragmented TLS ClientHello to bypass mTLS requirements.

This issue affects deployments where per-SNI SslContext selection is the only mTLS gate, the default SslContext is permissive, and no secondary peer-certificate verification exists at the application layer.


2) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-75596)

CWE-ID: CWE-407 - Inefficient Algorithmic Complexity

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient algorithmic complexity in the default SNI parsing path when processing fragmented TLS ClientHello records before handshake completion. A remote attacker can send many tiny handshake fragments that advertise a large ClientHello length to cause a denial of service.

The issue can degrade or stall TLS connection handling for other clients on the affected event loop.


3) Improper validation of certificate with host mismatch (CVE-ID: CVE-2026-62243)

CWE-ID: CWE-297 - Improper Validation of Certificate with Host Mismatch

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass TLS hostname verification and disclose sensitive information.

The vulnerability exists due to improper validation of certificate with host mismatch in the OpenSSL client path when using a plain X509TrustManager and trust-manager wrapping is unavailable. A remote attacker can present a certificate for a mismatched hostname to bypass TLS hostname verification and disclose sensitive information.

This affects the SslProvider.OPENSSL path on Java 25+ when Unsafe-based reflection is unavailable and a non-extended X509TrustManager is used.


Remediation

Install update from vendor's website.

References