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CVE-2026-26825
MEDIUM(5.3)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Risk Signal Score18/100 — NIEDRIG
- CVSS 5.3 — Mittel
EPSS-Score
0%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
5.3
Technische Schwere
Beschreibung
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialized heap memory originating from the OLE layer (ole2_read). The flaw is detectable with MemorySanitizer (MSAN) and can lead to undefined behavior, incorrect parsing logic, or potential information disclosure.