CVE-2026-78299

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-14 · updated 2026-09-16
Weakness: CWE-22

Description

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.

Affected products

Eclipse Foundation Eclipse Embedded CDT (C/C++ Development Tools): from 6.0.0 before 6.8.0 — fixed in 6.8.0

How to fix

Upgrade to a fixed version: Eclipse Foundation Eclipse Embedded CDT (C/C++ Development Tools) 6.8.0. Check the vendor advisory for mitigations.

References

https://github.com/eclipse-embed-cdt/eclipse-plugins/security/advisories/GHSA-qch4-8rmp-mjx3
https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/747

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