CVE-2026-6047

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.

CVSS v3
5.4
EG Score
5.4(medium)
EPSS
2.1%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 15, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

Security advisories — LibreOffice

https://www.libreoffice.org/about-us/security/advisories/cve-2026-6047

Vendor Advisories for CVE-2026-6047(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 62× 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. 2026-07-07 00:23 UTCEG score recompute
  2. 2026-07-07 00:23 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-05 10:46 UTCEG score recompute
  6. 2026-07-05 10:46 UTCGHSA enrichment
  7. 2026-07-04 10:04 UTCEG score recompute
  8. 2026-07-04 10:04 UTCGHSA enrichment
  9. 2026-07-03 07:18 UTCEG score recompute
  10. 2026-07-03 07:17 UTCGHSA enrichment
  11. 2026-07-02 05:25 UTCEG score recompute
  12. 2026-07-02 05:25 UTCGHSA enrichment
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-07-01 04:42 UTCEG score recompute
  15. 2026-07-01 04:42 UTCGHSA enrichment
  16. 2026-06-30 23:22 UTCEPSS rescore
  17. 2026-06-30 03:58 UTCEG score recompute
  18. 2026-06-30 03:58 UTCGHSA enrichment
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-29 03:18 UTCEG score recompute
  21. 2026-06-29 03:17 UTCGHSA enrichment
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-28 02:35 UTCEG score recompute
  25. 2026-06-28 02:35 UTCGHSA enrichment
Show 37 more
  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-27 01:55 UTCEG score recompute
  3. 2026-06-27 01:54 UTCGHSA enrichment
  4. 2026-06-26 01:14 UTCEG score recompute
  5. 2026-06-26 01:14 UTCGHSA enrichment
  6. 2026-06-25 13:50 UTCEPSS rescore
  7. 2026-06-25 00:25 UTCEG score recompute
  8. 2026-06-25 00:25 UTCGHSA enrichment
  9. 2026-06-24 14:05 UTCEPSS rescore
  10. 2026-06-23 23:45 UTCEG score recompute
  11. 2026-06-23 23:45 UTCGHSA enrichment
  12. 2026-06-23 21:33 UTCEPSS rescore
  13. 2026-06-23 21:33 UTCEPSS rescore
  14. 2026-06-22 23:03 UTCEG score recompute
  15. 2026-06-22 23:02 UTCGHSA enrichment
  16. 2026-06-22 14:25 UTCEPSS rescore
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-21 22:20 UTCEG score recompute
  19. 2026-06-21 22:20 UTCGHSA enrichment
  20. 2026-06-21 01:59 UTCEPSS rescore
  21. 2026-06-21 01:59 UTCEPSS rescore
  22. 2026-06-20 21:35 UTCEG score recompute
  23. 2026-06-20 21:35 UTCGHSA enrichment
  24. 2026-06-19 20:54 UTCEG score recompute
  25. 2026-06-19 20:54 UTCGHSA enrichment
  26. 2026-06-19 19:26 UTCEPSS rescore
  27. 2026-06-19 19:26 UTCEPSS rescore
  28. 2026-06-18 20:02 UTCEG score recompute
  29. 2026-06-18 20:02 UTCGHSA enrichment
  30. 2026-06-17 19:17 UTCEG score recompute
  31. 2026-06-17 19:17 UTCGHSA enrichment
  32. 2026-06-17 17:53 UTCEPSS rescore
  33. 2026-06-16 18:37 UTCEG score recompute
  34. 2026-06-16 18:36 UTCGHSA enrichment
  35. 2026-06-16 17:53 UTCEPSS rescore
  36. 2026-06-15 17:54 UTCEG score recompute
  37. 2026-06-15 17:53 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-6047?
CVE-2026-6047 is a medium vulnerability published on June 15, 2026. LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed…
When was CVE-2026-6047 disclosed?
CVE-2026-6047 was first published in the National Vulnerability Database on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6047 actively exploited?
CVE-2026-6047 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6047?
CVE-2026-6047 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-6047?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6047, 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.

Dependency Blast Radius

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