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CVE-2024-12426VulnerabilityPublished Updated

CVE-2024-12426: The Document Foundation LibreOffice · Information Exposure

Affects The Document Foundation LibreOfficeSource CVE Database V5

0

Not known to be exploited · CVSS 6.7 Medium : upgrade to 24.8.4 when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
6.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 24.8.4
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Jan 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade debian/libreoffice to 24.8.4.

Affected software

ProductAffectedFixed in
Debiandebian/libreofficepkg:deb/debian/libreofficeOther threatsAffected
  • =24.8
  • <24.8.4
Fixed in
  • 24.8.4

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

1. Upgrade LibreOffice installations to version 24.8.4 or later as soon as possible to apply the fix addressing this vulnerability. 2. Implement strict document handling policies, including disabling automatic link expansion or external content loading in LibreOffice where feasible. 3. Educate users to avoid opening documents from untrusted or unknown sources, emphasizing the risk of crafted URLs within documents. 4. Employ network-level controls such as web proxies or firewalls to monitor and block suspicious outbound connections that could be used for data exfiltration. 5. Audit and restrict environment variables and INI file contents to minimize sensitive data exposure on endpoints running LibreOffice. 6. Use endpoint detection and response (EDR) tools to monitor for unusual network activity originating from user workstations. 7. Regularly review and update security policies related to document processing and user privileges to reduce attack surface. 8. Consider sandboxing or isolating document viewers to limit potential data leakage vectors.

Description

Exposure of Environmental Variables and arbitrary INI file values to an Unauthorized Actor vulnerability in The Document Foundation LibreOffice. URLs could be constructed which expanded environmental variables or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. This issue affects LibreOffice: from 24.8 before < 24.8.4.

References

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