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TI-2018-14494 Aliases CVE-2018-20452GHSA-3hq6-4m9g-pfg4

The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows…

Priority MEDIUM 41CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.

Why it matters now

EPSS 0.01505 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:libxls_project:libxls:1.4.0:*:*:*:*:*:*:*1.4.0Vulnerablelibxls
  • cpe:2.3:a:libxls_project:libxls:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·libxls

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20452
  2. 2026-10-03 Alias added: GHSA-3hq6-4m9g-pfg4

References

Exploit 1

Advisory 1

  • TI-2026-21391 libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the… CVSS 3.1MEDIUM 6.5
  • TI-2023-20133 Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
  • TI-2023-20132 Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
  • TI-2023-20131 Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
  • TI-2023-20130 Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
  • TI-2023-20128 Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute… CVSS 3.1MEDIUM 6.5
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences