---
id: "CVE-2026-40660"
kind: "vulnerability"
aliases: ["CVE-2026-40660"]
title: "AMD Compressonator SDK: heap over-read lets a local user leak memory"
severity: "medium"
cvss: 5.2
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["amd-compressonator", "c++", "package", "windows"]
not_affected_if: ["sdk-not-used"]
published_at: "2026-11-03T15:17:39+00:00"
first_seen_at: "2026-11-03T15:22:02+00:00"
updated_at: "2026-11-03T15:24:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40660", "first_seen_at": "2026-11-03T15:22:02+00:00"}]
---

# AMD Compressonator SDK: heap over-read lets a local user leak memory

The AMD Compressonator SDK reads past the end of a heap buffer. A local attacker can read nearby heap memory or crash the application that uses it.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the AMD Compressonator SDK is present in your build or dependencies.
- Confirm the installed SDK version against the advisory; the sources do not give affected version ranges.

## Timeline

- 2026-11-03T15:22:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-40660

## From the sources

A heap-based out-of-bounds (OOB) read vulnerability in the AMD Compressonator SDK could allow an attacker with local access to read out-of-bounds heap memory, potentially resulting in information disclosure or application crash.

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