CVEvulnerability
CVE-2026-26824
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-06-03
- Last modified
- 2026-09-23
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
- Weaknesses
- CWE-457
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
Affected configurations
• libxls project libxls (<= 1.6.3)
Related
Weakness · CWE (1)
- CWE-457 Use of Uninitialized Variable weakness
References
- https://github.com/libxls/libxls/commit/9adebc9b6d60db21f25ddc898e8760eeb69d6529 github.com
- https://github.com/libxls/libxls/issues/153 github.com
- https://github.com/libxls/libxls/issues/155 Exploit, Issue Tracking
- https://github.com/libxls/libxls/issues/155 Exploit, Issue Tracking