# CVE-2026-40661: AMD Compressonator SDK out-of-bounds write in DDS file handling

Source: https://junglewise.ai/threats/cve-2026-40661-an-out-of-bounds-write-oow-condition-in-the-amd-compressonator  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-03. Updated: 2026-11-03  
License: CC BY 4.0 with a link back

CVE-2026-40661 · Severity: info · Published 2026-11-03

AMD Compressonator SDK is a graphics compression tool used by developers to optimize image assets. An out-of-bounds write vulnerability in its DDS (DirectDraw Surface) file parser could allow an attacker to corrupt memory or crash the application by providing a maliciously crafted DDS file, potentially affecting build pipelines or development workstations.

Technologies: [Amd Compressonator SDK](https://junglewise.ai/threats/technologies/compressonator-sdk). Vendors: [Amd](https://junglewise.ai/threats/vendors/amd).

## Quick answers

**Is CVE-2026-40661 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40661 being exploited in the wild.

**How severe is CVE-2026-40661?** Informational severity, published 3 November 2026.

**Which products and versions are affected?** AMD Compressonator SDK.

**Is there a fix for CVE-2026-40661?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-40661 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-40661?** Check whether you run Amd Compressonator SDK. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An out-of-bounds write condition exists in the DDS file parsing component of AMD Compressonator SDK. A local attacker can supply a specially crafted DDS file to trigger heap corruption or denial of service. The attack requires local access and user interaction to open or process the malicious file.

## Affected products

- AMD Compressonator SDK

## Timeline

- 2026-11-03: disclosed

## References

- [https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6032.html](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6032.html)

## Related threats

- [AMD Compressonator SDK heap-based out-of-bounds read](https://junglewise.ai/threats/cve-2026-40660-a-heap-based-out-of-bounds-oob-read-vulnerability-in-the-amd)
- [AMD Compressonator SDK integer overflow in DDS parsing](https://junglewise.ai/threats/cve-2026-40659-an-integer-overflow-condition-in-the-amd-compressonator-sdk-could)
- [AMD Compressonator SDK out-of-bounds read in TGA parser](https://junglewise.ai/threats/cve-2026-40652-an-out-of-bounds-read-condition-in-the-amd-compressonator-sdk)
- [AMD Compressonator SDK integer overflow in DDS RGB888 loader](https://junglewise.ai/threats/cve-2026-100493-an-integer-overflow-in-the-dds-rgb888-loader-of-amd)