CVE-2026-109448
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.
Risk Assessment
Applications that build parameter lists from untrusted input (e.g., dynamic IN (?, ?, ...) lists) can be remotely exploited to corrupt memory, leading to crashes or potential code execution. Versions before psqlODBC 18.00.0005 are affected.
Recommendation
Upgrade psqlODBC to version 18.00.0005 or later. Limit the number of parameters bound in a single statement and validate input used to build parameter lists.
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Original NVD description (English source)
Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS