Description
LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.
Published: 2026-06-15
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4633-1 libreoffice security update
Debian DSA Debian DSA DSA-6346-1 libreoffice security update
History

Thu, 18 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-131
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important


Tue, 16 Jun 2026 14:00:00 +0000

Type Values Removed Values Added
First Time appeared The Document Foundation
The Document Foundation libreoffice
Vendors & Products The Document Foundation
The Document Foundation libreoffice

Mon, 15 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 15 Jun 2026 18:00:00 +0000

Type Values Removed Values Added
Description LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.
Title Heap buffer overflow in Calc formula compilation
Weaknesses CWE-193
CWE-787
References
Metrics cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P'}


Subscriptions

The Document Foundation Libreoffice
cve-icon MITRE

Status: PUBLISHED

Assigner: Document Fdn.

Published:

Updated: 2026-06-15T18:03:57.153Z

Reserved: 2026-05-11T18:55:27.138Z

Link: CVE-2026-8357

cve-icon Vulnrichment

Updated: 2026-06-15T18:03:53.174Z

cve-icon NVD

Status : Deferred

Published: 2026-06-15T18:16:37.513

Modified: 2026-06-15T20:55:48.070

Link: CVE-2026-8357

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-15T16:23:37Z

Links: CVE-2026-8357 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-18T20:30:05Z

Weaknesses