Vulnerability Details CVE-2026-35355
The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.5%
CVSS Severity
CVSS v3 Score 6.3
References
Products affected by CVE-2026-35355
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cpe:2.3:a:uutils:coreutils:-
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cpe:2.3:a:uutils:coreutils:0.0.1
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cpe:2.3:a:uutils:coreutils:0.0.1.1
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cpe:2.3:a:uutils:coreutils:0.0.12
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cpe:2.3:a:uutils:coreutils:0.0.13
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cpe:2.3:a:uutils:coreutils:0.0.14
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cpe:2.3:a:uutils:coreutils:0.0.15
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cpe:2.3:a:uutils:coreutils:0.0.16
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cpe:2.3:a:uutils:coreutils:0.0.17
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cpe:2.3:a:uutils:coreutils:0.0.18
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cpe:2.3:a:uutils:coreutils:0.0.19
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cpe:2.3:a:uutils:coreutils:0.0.2
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cpe:2.3:a:uutils:coreutils:0.0.20
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cpe:2.3:a:uutils:coreutils:0.0.21
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cpe:2.3:a:uutils:coreutils:0.0.22
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cpe:2.3:a:uutils:coreutils:0.0.23
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cpe:2.3:a:uutils:coreutils:0.0.24
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cpe:2.3:a:uutils:coreutils:0.0.25
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cpe:2.3:a:uutils:coreutils:0.0.26
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cpe:2.3:a:uutils:coreutils:0.0.27
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cpe:2.3:a:uutils:coreutils:0.0.28
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cpe:2.3:a:uutils:coreutils:0.0.29
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cpe:2.3:a:uutils:coreutils:0.0.3
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cpe:2.3:a:uutils:coreutils:0.0.30
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cpe:2.3:a:uutils:coreutils:0.0.4
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cpe:2.3:a:uutils:coreutils:0.0.5
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cpe:2.3:a:uutils:coreutils:0.0.6
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cpe:2.3:a:uutils:coreutils:0.0.7
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cpe:2.3:a:uutils:coreutils:0.0.8
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cpe:2.3:a:uutils:coreutils:0.0.9
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cpe:2.3:a:uutils:coreutils:0.1.0
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cpe:2.3:a:uutils:coreutils:0.2.0
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cpe:2.3:a:uutils:coreutils:0.2.2
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cpe:2.3:a:uutils:coreutils:0.3.0
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cpe:2.3:a:uutils:coreutils:0.4.0
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cpe:2.3:a:uutils:coreutils:0.5.0