CVE-2026-35559 Out-of-bounds write in query processing components in Amazon Athena ODBC driver

High 7.1 Published 3 Apr 2026 Updated 20 Oct 2026

An out-of-bounds write in the Amazon Athena ODBC driver allows attackers to crash the driver via specially crafted query data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-35559?

CVE-2026-35559 is a high-severity memory corruption vulnerability in Amazon Athena ODBC driver, published on 3 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Out-of-bounds write in the query processing components in Amazon Athena ODBC driver before 2.1.0.0 might allow a threat actor to crash the driver by using specially crafted data that is processed by the driver during query operations.

To remediate this issue, users should upgrade to version 2.1.0.0.

Weakness: CWE-787

Which versions are affected by CVE-2026-35559?

It affects 1 product.

Products include Amazon Athena Odbc.

How do I fix CVE-2026-35559?

No fix has been published for CVE-2026-35559 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-35559 being exploited?

There is no known exploitation of CVE-2026-35559 in the wild and no public exploit code.

Sources

Also known as GHSA-2qgc-55qq-3w8v.