CVE-2026-78299

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-14. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
56(Track)
EG Risk 56/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
Patch available. Sources: github.
generic

[Eclipse Embedded CDT (C/C++ Development Tools)] Zip Slip in CMSIS-Pack archive extraction (`InstallJob.unzip`) (#747) · Issues · Eclipse Projects Security / vulnerability-reports · GitLab

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/747
github Patch Available

Zip Slip in CMSIS-Pack archive extraction · Advisory · eclipse-embed-cdt/eclipse-plugins · GitHub

https://github.com/eclipse-embed-cdt/eclipse-plugins/security/advisories/GHSA-qch4-8rmp-mjx3

Vendor Advisories for CVE-2026-78299(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 59× in last 7d / 96× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 12:22 UTCGHSA enrichment
  2. 2026-09-25 08:44 UTCGHSA enrichment
  3. 2026-09-25 05:06 UTCGHSA enrichment
  4. 2026-09-25 01:28 UTCGHSA enrichment
  5. 2026-09-24 21:50 UTCGHSA enrichment
  6. 2026-09-24 18:12 UTCEG score recompute
  7. 2026-09-24 18:12 UTCGHSA enrichment
  8. 2026-09-24 14:04 UTCEPSS rescore
  9. 2026-09-24 13:43 UTCGHSA enrichment
  10. 2026-09-24 10:05 UTCGHSA enrichment
  11. 2026-09-24 06:27 UTCGHSA enrichment
  12. 2026-09-24 02:49 UTCGHSA enrichment
  13. 2026-09-23 23:11 UTCGHSA enrichment
  14. 2026-09-23 19:23 UTCEG score recompute
  15. 2026-09-23 19:23 UTCGHSA enrichment
  16. 2026-09-23 17:54 UTCEPSS rescore
  17. 2026-09-23 15:30 UTCGHSA enrichment
  18. 2026-09-23 11:53 UTCGHSA enrichment
  19. 2026-09-23 08:15 UTCGHSA enrichment
  20. 2026-09-23 04:37 UTCGHSA enrichment
  21. 2026-09-23 00:59 UTCGHSA enrichment
  22. 2026-09-22 21:21 UTCGHSA enrichment
  23. 2026-09-22 17:43 UTCEG score recompute
  24. 2026-09-22 17:43 UTCGHSA enrichment
  25. 2026-09-22 16:01 UTCEPSS rescore
Show 71 more
  1. 2026-09-22 13:48 UTCGHSA enrichment
  2. 2026-09-22 10:10 UTCGHSA enrichment
  3. 2026-09-22 06:32 UTCGHSA enrichment
  4. 2026-09-22 02:54 UTCGHSA enrichment
  5. 2026-09-21 23:17 UTCEG score recompute
  6. 2026-09-21 23:17 UTCGHSA enrichment
  7. 2026-09-21 21:09 UTCEPSS rescore
  8. 2026-09-21 19:38 UTCGHSA enrichment
  9. 2026-09-21 16:00 UTCGHSA enrichment
  10. 2026-09-21 12:22 UTCGHSA enrichment
  11. 2026-09-21 08:44 UTCGHSA enrichment
  12. 2026-09-21 05:03 UTCGHSA enrichment
  13. 2026-09-21 01:23 UTCGHSA enrichment
  14. 2026-09-20 21:36 UTCEG score recompute
  15. 2026-09-20 21:36 UTCGHSA enrichment
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-20 17:58 UTCGHSA enrichment
  18. 2026-09-20 14:17 UTCGHSA enrichment
  19. 2026-09-20 10:39 UTCGHSA enrichment
  20. 2026-09-20 06:59 UTCGHSA enrichment
  21. 2026-09-20 02:54 UTCGHSA enrichment
  22. 2026-09-19 23:15 UTCGHSA enrichment
  23. 2026-09-19 19:37 UTCGHSA enrichment
  24. 2026-09-19 15:59 UTCEG score recompute
  25. 2026-09-19 15:59 UTCGHSA enrichment
  26. 2026-09-19 12:21 UTCGHSA enrichment
  27. 2026-09-19 08:43 UTCGHSA enrichment
  28. 2026-09-19 05:05 UTCGHSA enrichment
  29. 2026-09-19 01:27 UTCGHSA enrichment
  30. 2026-09-18 21:48 UTCEG score recompute
  31. 2026-09-18 21:48 UTCGHSA enrichment
  32. 2026-09-18 19:28 UTCEPSS rescore
  33. 2026-09-18 18:11 UTCGHSA enrichment
  34. 2026-09-18 14:24 UTCGHSA enrichment
  35. 2026-09-18 10:46 UTCGHSA enrichment
  36. 2026-09-18 07:08 UTCGHSA enrichment
  37. 2026-09-18 03:30 UTCGHSA enrichment
  38. 2026-09-17 23:51 UTCGHSA enrichment
  39. 2026-09-17 19:33 UTCEG score recompute
  40. 2026-09-17 19:33 UTCGHSA enrichment
  41. 2026-09-17 15:18 UTCGHSA enrichment
  42. 2026-09-17 11:40 UTCGHSA enrichment
  43. 2026-09-17 08:02 UTCGHSA enrichment
  44. 2026-09-17 04:24 UTCGHSA enrichment
  45. 2026-09-17 00:46 UTCGHSA enrichment
  46. 2026-09-16 21:08 UTCGHSA enrichment
  47. 2026-09-16 19:43 UTCGHSA enrichment
  48. 2026-09-16 16:05 UTCEG score recompute
  49. 2026-09-16 16:05 UTCGHSA enrichment
  50. 2026-09-16 14:08 UTCEPSS rescore
  51. 2026-09-16 12:26 UTCGHSA enrichment
  52. 2026-09-16 08:48 UTCEG score recompute
  53. 2026-09-16 08:48 UTCGHSA enrichment
  54. 2026-09-16 05:15 UTCEPSS rescore
  55. 2026-09-16 05:08 UTCGHSA enrichment
  56. 2026-09-16 01:31 UTCGHSA enrichment
  57. 2026-09-15 21:53 UTCGHSA enrichment
  58. 2026-09-15 18:15 UTCGHSA enrichment
  59. 2026-09-15 14:37 UTCGHSA enrichment
  60. 2026-09-15 10:58 UTCGHSA enrichment
  61. 2026-09-15 07:20 UTCGHSA enrichment
  62. 2026-09-15 03:41 UTCGHSA enrichment
  63. 2026-09-15 00:03 UTCEG score recompute
  64. 2026-09-15 00:03 UTCGHSA enrichment
  65. 2026-09-14 20:25 UTCGHSA enrichment
  66. 2026-09-14 19:30 UTCEG score recompute▲ 9.10
  67. 2026-09-14 19:30 UTCGHSA enrichment
  68. 2026-09-14 19:29 UTCMITRE cvelistV5CVSS v3 → 9.1 · severity → CRITICAL
  69. 2026-09-14 13:28 UTCNVD update
  70. 2026-09-14 13:10 UTCEG score recompute
  71. 2026-09-14 13:09 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78299?
CVE-2026-78299 is a critical vulnerability published on September 14, 2026. 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.
When was CVE-2026-78299 disclosed?
CVE-2026-78299 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78299 actively exploited?
CVE-2026-78299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.3% of all scored CVEs.
What is the CVSS score of CVE-2026-78299?
CVE-2026-78299 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78299?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78299, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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