Use of Uninitialized Resource Affecting r-cran-readxl package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.21% (12th percentile)

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  • Snyk IDSNYK-DEBIAN12-RCRANREADXL-17200896
  • published13 Jun 2026
  • disclosed3 Jun 2026

Introduced: 3 Jun 2026

CVE-2026-26825  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 r-cran-readxl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream r-cran-readxl package and not the r-cran-readxl package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1