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TI-2017-08902 Aliases CVE-2017-12109GHSA-9qvr-p35q-rv6h

Integer overflow in libxls

Priority MEDIUM 43CWE-190Published · 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 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULRK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.

Why it matters now

EPSS 0.02677 85th 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
libxlslibxls1.4 readxl package 1.0.0 for R (tested using Microsoft R 4.3.1)—No fix listedCNA
  • libxls Vendorlibxls Affected 1.4 readxl package 1.0.0 for R (tested using Microsoft R 4.3.1) Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:libxls_project:libxls:1.4:*:*:*:*:*:*:*1.4Vulnerablelibxls
  • cpe:2.3:a:libxls_project:libxls:1.4:*:*:*:*:*:*:* Versions 1.4 Vulnerable ·libxls

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-12109
  2. 2026-10-03 Alias added: GHSA-9qvr-p35q-rv6h

References

Exploit 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