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CVE-2026-93658— uutils coreutils 0.0.18 before 0.10.0 Privilege Escalation via setuid

Quick assessment

Affected
uutils coreutils
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 0.10.0 之前的 uutils coreutils 版本中，在确定所有权变更之前，会先对安装目标应用 setuid 或 setgid 权限位。这允许特权用户在所有权变更失败时，留下由该特权调用者拥有的 setuid 可执行文件。在具备能力限制（capability-restricted）的系统上，当所有权变更操作失败时，攻击者可以执行这些残留的 setuid 文件，从而获得提升的权限。

CVSS 7.0 · High EPSS 0.15% · P5

Affected Version Matrix 2

VendorProduct Version RangeStatus
uutils coreutils 0.0.18< 0.10.0 affected
0.10.0 unaffected
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I. Basic Information for CVE-2026-93658

Vulnerability Information
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Vulnerability Title
uutils coreutils 0.0.18 before 0.10.0 Privilege Escalation via setuid
Source: CVE Program / CVE List V5
Vulnerability Description
uutils coreutils versions before 0.10.0 apply setuid or setgid mode to install destinations before finalizing ownership changes, allowing privileged users to leave setuid executables owned by the privileged invoker when ownership changes fail. Attackers can execute leftover setuid files with elevated privileges when ownership change operations fail on capability-restricted systems.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
权限预留不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
uutils coreutils 0.0.18 ~ 0.10.0 -

II. Public POCs for CVE-2026-93658

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III. Intelligence Information for CVE-2026-93658

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Patches & Fixes for CVE-2026-93658 (2)

Other References for CVE-2026-93658 (3)

IV. Related Vulnerabilities

Same product: coreutils
Same vendor: uutils
Same weakness: CWE-281

V. Comments for CVE-2026-93658

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