VULNERABILITY INTELLIGENCE

CVE-2026-26824

CVSS score6.5 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-06-03
Last modified2026-09-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Description

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-457

Primary references