What is CVE-2026-78299?

CVE-2026-78299 is a critical-severity vulnerability in Eclipse Foundation Embedded Cdt (C/c++ Development Tools), classified under Path Traversal. CVSS score: 9.1/10. Published 2026-09-14.

How severe is CVE-2026-78299?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Path Traversal in Eclipse Foundation Embedded Cdt (C/c++ Development Tools)

CVE-2026-78299

In Eclipse Embedded CDT versions 6.0 to 6.7 if the CMSIS-Pack archive extracts a compromised CMSIS pack the archive extraction can extract files to locations outside of the pack, allowing writing of arbitrary files to other locations on disk.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Eclipse Foundation Embedded Cdt (C/c++ Development Tools)

Weakness classification (CWE)

CWE-22 — Path Traversal

References

emo@eclipse.org
emo@eclipse.org

Frequently asked questions

What is CVE-2026-78299?: CVE-2026-78299 is a critical-severity vulnerability in Eclipse Foundation Embedded Cdt (C/c++ Development Tools), classified under Path Traversal. CVSS score: 9.1/10. Published 2026-09-14.
How severe is CVE-2026-78299?: Critical severity. CVSS v3 base score is 9.1 out of 10.