CVE-2026-8357
Heap buffer overflow in Calc formula compilation
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
The Document Foundation
oss-project·NLaka tdf, document foundation
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Initial Access
Privilege Escalation
References
https://www.libreoffice.org/about-us/security/advisories/cve-2026-8357
libreoffice.org
https://access.redhat.com/errata/RHSA-2026:35839
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:36832
access.redhat.com
and 10 more references View all →
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