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CVE-2026-35346

3.3 low SSVC exploitation: poc Analyzed
NVD · CVE.org

The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.

Fix

Patch, vendor advisory and mitigation references on NVD 3

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 3.3 · uutilsNVD modified 2026-10-26 22:10

Affected (CPE criteria) 1

  • cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*

References 4