CVE-2026-79592

high

Description

An out-of-bounds read vulnerability exists in the xls_dumpSummary() function of libxls 1.6.3 due to insufficient validation of file-controlled OLE summary offsets.

References

https://github.com/libxls/libxls/pull/165/changes/6eed8bc1d51d6649faebab0184b21ab8768d8fa6

https://github.com/libxls/libxls/issues/162

Details

Source: Mitre, NVD

Published: 2026-09-10

Updated: 2026-09-11

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N