CVE-2026-111127
MEDIUM
CVSS 6.1
Published: 2026-10-15
Modified: 2026-10-16
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Description
catdoc through 0.95 contains an out-of-bounds read vulnerability in copy_unicode_string() in src/xlsparse.c that allows attackers to read past buffers via an unchecked string character count. Attackers can supply a crafted .xls file declaring 0xFFFF two-byte characters in LABEL, STRING, or SST records to disclose adjacent memory through xls2csv output or crash the process.
Quick Facts
| CVE ID | CVE-2026-111127 |
| CVSS Score | 6.1 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H |
| Published | 2026-10-15 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |