CVE-2026-8358

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% 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: cna:document fdn., epss
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (1)

Auto-updated Jun 15, 2026
Patch available.
generic

Security advisories — LibreOffice

https://www.libreoffice.org/about-us/security/advisories/cve-2026-8358

Vendor Advisories for CVE-2026-8358(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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntuure-java (4:26.2.4.2-0ubuntu0.26.04.2) @ resolute2026-09-14ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libreoffice1:7.0.4-4 ... 4:7.6.4~rc1-1~bpo12+1 (402 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libreoffice4:7.4.5-3 ... 4:7.4.7-1~bpo11+1 (17 versions)
  • every version up to 4:7.4.7-1+deb12u13: fixed in 4:7.4.7-1+deb12u13
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libreoffice4:25.2.3-2 ... 4:25.2.3-2+deb13u5~bpo12+1 (8 versions)
  • every version up to 4:25.2.3-2+deb13u5: fixed in 4:25.2.3-2+deb13u5
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libreoffice4:25.2.3-2 ... 4:26.2.4.2-1~bpo13+1 (54 versions)
  • every version up to 4:26.2.4.2-1: fixed in 4:26.2.4.2-1
—

Weakness Classification(2)

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 7× in last 7d / 29× 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 223 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-8358?
CVE-2026-8358 is a medium vulnerability published on June 15, 2026. LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its…
When was CVE-2026-8358 disclosed?
CVE-2026-8358 was first published on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8358 actively exploited?
CVE-2026-8358 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-8358?
CVE-2026-8358 has a CVSS base score of 5.4 (the CNA's own assessment, by document fdn.; NVD's own analysis pending).
How do I remediate CVE-2026-8358?
A fix for CVE-2026-8358 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-8358 are linked in the Vendor Advisories panel on this page.

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