SB2026070839 - Red Hat Enterprise Linux 9 update for libreoffice
Published: July 8, 2026
Security Bulletin ID
SB2026070839
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2026-8357)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to heap-based buffer overflow in Calc formula compilation when parsing a specially crafted document containing a very long formula with many opening tokens. A remote attacker can trick the victim into opening a crafted document to execute arbitrary code.
User interaction is required to open a crafted document.
Remediation
Install update from vendor's website.