CVE Intelligence
Medium Info disclosure

CVE-2024-12426 — URL fetching can be used to exfiltrate arbitrary INI file values and environment variables

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.

Published Jan 7, 2025 · Updated Oct 18, 2026 · Sources: CVE Program (cve.org) e CISA ADP, NIST National Vulnerability Database, GitHub Security Advisories · CNA: Document Fdn.

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.5% (30-day exploitation probability)+7
  • Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.55%
ahead of 46% of scored CVEs · Oct 30, 2026
Affects
Debian
Debian Linux and 2 more
CVSS base
6.5
Medium · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Debian Debian Linux, Libreoffice Libreoffice, The Document Foundation LibreOffice).
  2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  4. Exploitation requires user interaction: tighten email/web filtering and warn affected users.
  5. Search available logs for exploit probes matching the vulnerability class (info disclosure), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Debian Debian Linux version 11.0 Vulnerable NIST National Vulnerability Database
Libreoffice Libreoffice ≥ 24.8.0.1 and < 24.8.4version 24.8.0.0-alpha1version 24.8.0.0-beta1 Vulnerable NIST National Vulnerability Database
The Document Foundation LibreOffice ≥ 24.8 and < < 24.8.4 Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
6.7 CVSS 4.0 Medium — — security@documentfoundation.org via NIST National Vulnerability Database
6.7 CVSS 4.0 Medium — — Document Fdn. via CVE Program (cve.org) e CISA ADP
6.5 CVSS 3.1 Medium 2.8 3.6 nvd@nist.gov via NIST National Vulnerability Database
6.5 CVSS 3.1 Medium — — GitHub, Inc. via GitHub Security Advisories
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-200 · Exposure of Sensitive Information

Other CVEs with this weakness →

EPSS over time FIRST

Oct 18, 2026 → Oct 30, 2026 · 13 reading(s) · max 0.55%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Look for anomalous data read/export volumes and access to sensitive records.
web/proxy/WAF logsnetwork IDS/IPSapplication logsauthentication logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · libreoffice/libreoffice, debian/debian linux
    Oct 18, 2026 · NIST National Vulnerability Database
  • CVSS changed · 6.7 → 6.5
    Oct 18, 2026 · NIST National Vulnerability Database
  • Source status changed · Published → Analyzed
    Oct 18, 2026 · NIST National Vulnerability Database
  • Record published
    Oct 18, 2026
  • Affected products added · the document foundation/libreoffice
    Oct 18, 2026 · CVE Program (cve.org) e CISA ADP
  • CVSS changed · 6.7
    Oct 18, 2026 · CVE Program (cve.org) e CISA ADP
  • Source status changed · → Published
    Oct 18, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 18, 2026 · CVE Program (cve.org) e CISA ADP
  • Record created in this database
    Oct 18, 2026 · Alertas do Telegram
  • 2025
  • CVE published
    Jan 7, 2025 · Document Fdn.

Source activity

Repeated readings are counted rather than listed.

  • 3× References added · Oct 18, 2026 – Oct 18, 2026
  • 1× Official description updated · Oct 18, 2026 – Oct 18, 2026

References

4 on the record

Elsewhere on this site

Debian
every CVE for this vendor
Info disclosure
same class
CWE-200
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-111497 Google Brotli Unchecked Return Value Vulnerability KEV 8d
  • CVE-2026-63270 Environment/ini-file leaks 25d
  • CVE-2026-63277 RCE via calcext:data-mappings, sql provider and jdbc connector 25d
  • CVE-2026-63266 Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality 25d
  • CVE-2026-63267 LFI and GET SSRF via calcext:data-mappings and csv provider 25d
  • CVE-2026-63268 LFI via calcext:data-mappings, sql provider and sdbc:flat:file:// db href 25d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2024-12426 is "URL fetching can be used to exfiltrate arbitrary INI file values and environment variables", rated Medium. It affects Debian Linux (Debian); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 0.55% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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