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Fencer Intel
critical 9.1

CVE-2026-78299 json

Zip Slip in CMSIS-Pack archive extraction

published last mo. modified last mo. also EUVD-2026-77465 , GHSA-qch4-8rmp-mjx3

Unreviewed: the maintainers' own advisory

Published by the maintainers on their GitHub repository eclipse-embed-cdt/eclipse-plugins. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

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.

Patch / fix

  • Eclipse Foundation Eclipse Embedded CDT (C/C++ Development Tools) 6.8.0

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
last mo.

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

  • Eclipse Foundation Eclipse Embedded CDT (C/C++ Development Tools)

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of eclipse-embed-cdt/eclipse-plugins published their own advisory on GitHub. Reviewed sources take precedence over it.