CVE-2024-12426

Sensitive-data exfiltration via document URL expansion

Published Jan 7, 2025 · Updated Nov 3, 2025

Information disclosure in The Document Foundation LibreOffice 24.8 series before 24.8.4 allows attackers to exfiltrate sensitive local values. Document-hosted URLs invoke an internal expansion feature that substitutes environment variables and arbitrary INI values before fetching the resulting address. A target user must open a document containing a crafted link; the resulting outbound request sends the expanded values to an attacker-controlled server.

CVSS severity6.7
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in The Document Foundation LibreOffice 24.8 series before 24.8.4 allows attackers to exfiltrate sensitive local values. Document-hosted URLs invoke an internal expansion feature that substitutes environment variables and arbitrary INI values before fetching the resulting address. A target user must open a document containing a crafted link; the resulting outbound request sends the expanded values to an attacker-controlled server.

The record

CVE
CVE-2024-12426
Published
Jan 7, 2025
Updated
Nov 3, 2025
Vendor
The Document Foundation
Product
LibreOffice
Classifications
CWE-200, CAPEC-13, T1204.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=24.8 << 24.8.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Document Foundation · LibreOfficeversion=24.8 << 24.8.4

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
6.7The Document FoundationCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CAPEC-13Subverting Environment Variable Values
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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