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TI-2023-20133 Aliases CVE-2023-38856GHSA-5463-2m97-2wvc

Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute…

Priority MEDIUM 62CWE-787Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the get_string function in xlstool.c:411.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00874 59th 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

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

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:1.6.2:*:*:*:*:*:*:*1.6.2Vulnerablelibxls
  • cpe:2.3:a:libxls_project:libxls:1.6.2:*:*:*:*:*:*:* Versions 1.6.2 Vulnerable ·libxls

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-38856
  2. 2026-10-03 Alias added: GHSA-5463-2m97-2wvc

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-2023-20132 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
  • TI-2017-08902 Integer overflow in libxls CVSS 3.0HIGH 8.8
See all 19 →

Sources

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