An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.
{
"sources": [
{
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27819",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-27819",
"modified": "2026-06-17T03:09:40.823Z",
"published": "2021-02-23T04:15:13.883Z",
"imported": "2026-08-12T16:06:13.387Z",
"id": "CVE-2020-27819",
"database_specific": {
"status": "Modified"
}
}
],
"license": "CC-BY-4.0"
}