CVE-2026-6040

HIGHPre-NVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory published 2026-06-15. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

A fix is available — apply it.

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed versions the position is bounds-checked before use.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 15, 2026

Last Modified

July 23, 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-2026-6040

Vendor Advisories for CVE-2026-6040(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuure-java (4:26.2.4.2-0ubuntu0.26.04.2) @ resolute2026-08-24ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libreoffice1:7.0.4-4 ... 4:7.6.4~rc1-1~bpo12+1 (402 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libreoffice4:25.2.3-2 ... 4:25.2.3-2+deb13u5~bpo12+1 (8 versions)4:25.2.3-2+deb13u5—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libreoffice4:25.2.3-2 ... 4:26.2.3.2-2~bpo13+1 (51 versions)4:26.2.3.2-2—

Weakness Classification(3)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 25× in last 7d / 133× 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.

Showing the most recent 100 of 244 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 23:38 UTCEG score recompute
  3. 2026-08-24 23:38 UTCVendor advisory
  4. 2026-08-24 23:38 UTCGHSA enrichment
  5. 2026-08-23 23:20 UTCVendor advisory
  6. 2026-08-23 23:19 UTCGHSA enrichment
  7. 2026-08-23 09:49 UTCEG score recompute
  8. 2026-08-23 09:49 UTCVendor advisory
  9. 2026-08-23 09:48 UTCGHSA enrichment
  10. 2026-08-23 00:19 UTCEPSS rescore
  11. 2026-08-21 23:44 UTCVendor advisory
  12. 2026-08-21 23:44 UTCGHSA enrichment
  13. 2026-08-21 10:46 UTCEG score recompute
  14. 2026-08-21 10:46 UTCVendor advisory
  15. 2026-08-21 10:46 UTCGHSA enrichment
  16. 2026-08-20 22:56 UTCEPSS rescore
  17. 2026-08-20 21:39 UTCVendor advisory
  18. 2026-08-20 21:39 UTCGHSA enrichment
  19. 2026-08-20 08:41 UTCEG score recompute
  20. 2026-08-20 08:41 UTCVendor advisory
  21. 2026-08-20 08:41 UTCGHSA enrichment
  22. 2026-08-19 17:04 UTCEPSS rescore
  23. 2026-08-19 13:15 UTCEG score recompute
  24. 2026-08-19 13:15 UTCVendor advisory
  25. 2026-08-19 13:15 UTCGHSA enrichment
Show 75 more
  1. 2026-08-18 13:49 UTCEPSS rescore
  2. 2026-08-18 13:49 UTCEPSS rescore
  3. 2026-08-17 13:47 UTCEPSS rescore
  4. 2026-08-17 11:26 UTCVendor advisory
  5. 2026-08-17 11:26 UTCGHSA enrichment
  6. 2026-08-16 22:29 UTCEG score recompute
  7. 2026-08-16 22:29 UTCVendor advisory
  8. 2026-08-16 22:29 UTCGHSA enrichment
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 05:14 UTCEG score recompute
  12. 2026-08-16 05:14 UTCVendor advisory
  13. 2026-08-16 05:14 UTCGHSA enrichment
  14. 2026-08-16 02:15 UTCEPSS rescore
  15. 2026-08-15 16:17 UTCVendor advisory
  16. 2026-08-15 16:17 UTCGHSA enrichment
  17. 2026-08-15 03:19 UTCEG score recompute
  18. 2026-08-15 03:19 UTCVendor advisory
  19. 2026-08-15 03:19 UTCGHSA enrichment
  20. 2026-08-15 01:31 UTCEPSS rescore
  21. 2026-08-14 14:21 UTCVendor advisory
  22. 2026-08-14 14:21 UTCGHSA enrichment
  23. 2026-08-14 01:24 UTCEG score recompute
  24. 2026-08-14 01:24 UTCVendor advisory
  25. 2026-08-14 01:24 UTCGHSA enrichment
  26. 2026-08-13 22:00 UTCEPSS rescore
  27. 2026-08-13 12:26 UTCVendor advisory
  28. 2026-08-13 12:26 UTCGHSA enrichment
  29. 2026-08-12 23:28 UTCEG score recompute
  30. 2026-08-12 23:28 UTCVendor advisory
  31. 2026-08-12 23:28 UTCGHSA enrichment
  32. 2026-08-12 13:51 UTCEPSS rescore
  33. 2026-08-12 10:31 UTCVendor advisory
  34. 2026-08-12 10:31 UTCGHSA enrichment
  35. 2026-08-11 21:33 UTCEG score recompute
  36. 2026-08-11 21:33 UTCVendor advisory
  37. 2026-08-11 21:33 UTCGHSA enrichment
  38. 2026-08-11 08:36 UTCEG score recompute
  39. 2026-08-11 08:36 UTCVendor advisory
  40. 2026-08-11 08:36 UTCGHSA enrichment
  41. 2026-08-11 00:00 UTCEPSS rescore
  42. 2026-08-10 19:38 UTCVendor advisory
  43. 2026-08-10 19:38 UTCGHSA enrichment
  44. 2026-08-10 03:27 UTCVendor advisory
  45. 2026-08-10 03:27 UTCGHSA enrichment
  46. 2026-08-09 14:30 UTCEG score recompute
  47. 2026-08-09 14:30 UTCVendor advisory
  48. 2026-08-09 14:30 UTCGHSA enrichment
  49. 2026-08-09 13:47 UTCEPSS rescore
  50. 2026-08-09 01:32 UTCEG score recompute
  51. 2026-08-09 01:32 UTCVendor advisory
  52. 2026-08-09 01:32 UTCGHSA enrichment
  53. 2026-08-08 16:37 UTCEPSS rescore
  54. 2026-08-08 12:35 UTCVendor advisory
  55. 2026-08-08 12:35 UTCGHSA enrichment
  56. 2026-08-07 23:37 UTCEG score recompute
  57. 2026-08-07 23:37 UTCVendor advisory
  58. 2026-08-07 23:37 UTCGHSA enrichment
  59. 2026-08-07 10:39 UTCVendor advisory
  60. 2026-08-07 10:39 UTCGHSA enrichment
  61. 2026-08-06 21:41 UTCEG score recompute
  62. 2026-08-06 21:41 UTCVendor advisory
  63. 2026-08-06 21:41 UTCGHSA enrichment
  64. 2026-08-06 13:47 UTCEPSS rescore
  65. 2026-08-06 08:43 UTCVendor advisory
  66. 2026-08-06 08:43 UTCGHSA enrichment
  67. 2026-08-05 19:45 UTCEG score recompute
  68. 2026-08-05 19:45 UTCVendor advisory
  69. 2026-08-05 19:45 UTCGHSA enrichment
  70. 2026-08-05 19:17 UTCEPSS rescore
  71. 2026-08-05 19:17 UTCEPSS rescore
  72. 2026-08-04 16:47 UTCEG score recompute
  73. 2026-08-04 16:47 UTCVendor advisory
  74. 2026-08-04 16:47 UTCGHSA enrichment
  75. 2026-08-04 15:10 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-6040?
CVE-2026-6040 is a high vulnerability published on June 15, 2026. A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed…
When was CVE-2026-6040 disclosed?
CVE-2026-6040 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6040 actively exploited?
CVE-2026-6040 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.4% of all scored CVEs.
What is the CVSS score of CVE-2026-6040?
CVE-2026-6040 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-6040?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6040, 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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