vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-8358

Heap buffer overflow in spreadsheet tracked-changes import

MEDIUM
5.4
CVSS Score
Published: June 15, 2026 at 04:24 PM UTC
Updated: October 25, 2026 at 11:10 PM UTC
1 product affected across 1 vendorLibreOffice

Using LibreOffice by The Document Foundation?

Get instant alerts when new vulnerabilities affect LibreOffice - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

LibreOffice· Document
90%
25.8 ≤ v < < 25.8.726.2 ≤ v < < 26.2.425.826.2
Affected range stops below < 25.8.7, so it looks safe — our inference, not a vendor statement
Affected range stops below < 26.2.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMDocument Fdn.
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-843CWE-787

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card