CVE-2025-13669

High Level Synthesis Compiler Security Advisory

5.4 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: Low
User interaction: Active

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.12%Up 0.1 points since Dec 12, 2025

What each source reports

CVE List Score used 5.4

High Level Synthesis Compiler Security Advisory

Record: CVE-2025-13669
CVSS 4.0: 5.4 MediumCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-427
Updated: 2026-11-02

EUVDEUVD-2025-202940 5.4

Record: EUVD-2025-202940
CVSS 4.0: 5.4 MediumCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-q6m2-f497-3j77 5.4

Uncontrolled Search Path Element vulnerability in Altera High Level Synthesis Compiler on Windows...

Record: GHSA-q6m2-f497-3j77
CVSS 4.0: 5.4 MediumCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-427
Updated: 2026-11-02

NVD 5.4

Record: CVE-2025-13669
CVSS 4.0: 5.4 MediumCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-427
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-13669 is a medium vulnerability (CVSS 5.4) in Altera High Level Synthesis Compiler, published December 12, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.