CVE-2026-35350

The cp utility in uutils coreutils fails to properly handle setuid and setgid bits when ownership preservation fails. When copying with the -p (preserve) flag, the utility applies the source mode bits even if the chown operation is unsuccessful. This can result in a user-owned copy retaining original privileged bits, creating unexpected privileged executables that violate local security policies. This differs from GNU cp, which clears these bits when ownership cannot be preserved.

CVSS v3 6.6 MEDIUM

6.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/uutils/coreutils/issues/9750	Exploit Issue Tracking Vendor Advisory
https://github.com/uutils/coreutils/issues/9750	Exploit Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-04-22 17:16

Updated : 2026-06-17 10:40

NVD link : CVE-2026-35350

Mitre link : CVE-2026-35350

CVE.ORG link : CVE-2026-35350

JSON object : View

Products Affected

uutils

coreutils

CWE

CWE-281

Improper Preservation of Permissions

{"id": "CVE-2026-35350", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-35350", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-22T17:56:50.879133Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@ubuntu.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.6, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 4.7, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security@ubuntu.com", "affectedData": [{"repo": "https://github.com/uutils/coreutils", "vendor": "Uutils", "product": "coreutils", "platforms": ["Linux", "Unix", "macOS"], "packageName": "coreutils", "collectionURL": "https://github.com/uutils", "defaultStatus": "affected"}]}], "published": "2026-04-22T17:16:37.327", "references": [{"url": "https://github.com/uutils/coreutils/issues/9750", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "source": "security@ubuntu.com"}, {"url": "https://github.com/uutils/coreutils/issues/9750", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@ubuntu.com", "description": [{"lang": "en", "value": "CWE-281"}]}], "descriptions": [{"lang": "en", "value": "The cp utility in uutils coreutils fails to properly handle setuid and setgid bits when ownership preservation fails. When copying with the -p (preserve) flag, the utility applies the source mode bits even if the chown operation is unsuccessful. This can result in a user-owned copy retaining original privileged bits, creating unexpected privileged executables that violate local security policies. This differs from GNU cp, which clears these bits when ownership cannot be preserved."}], "lastModified": "2026-06-17T10:40:26.480", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*", "vulnerable": true, "matchCriteriaId": "4A9AF9E4-E17C-48AD-8051-B49998618839"}], "operator": "OR"}]}], "sourceIdentifier": "security@ubuntu.com"}