CVE-2025-11233

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Due to this, programs compiled for Cygwin that validate paths could misbehave, potentially allowing path traversal attacks or malicious filesystem operations.</div><div><br></div>Rust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.<br><div><br></div><div>While we assess the severity of this vulnerability as \"medium\", please note that the tier 3 Cygwin compilation target is only available when building it from source: no pre-built binaries are distributed by the Rust project, and it cannot be installed through Rustup. Unless you manually compiled the `x86_64-pc-cygwin` target you are not affected by this vulnerability. Users of the tier 1 MinGW target (`x86_64-pc-windows-gnu`) are also explicitly not affected.</div><div></div>"}], "value": "Starting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn't correctly handle path separators, causing the standard library's Path API to ignore path components separated by backslashes. Due to this, programs compiled for Cygwin that validate paths could misbehave, potentially allowing path traversal attacks or malicious filesystem operations.\n\n\n\n\nRust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.\n\n\n\nWhile we assess the severity of this vulnerability as \"medium\", please note that the tier 3 Cygwin compilation target is only available when building it from source: no pre-built binaries are distributed by the Rust project, and it cannot be installed through Rustup. Unless you manually compiled the `x86_64-pc-cygwin` target you are not affected by this vulnerability. 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Due to this, programs compiled for Cygwin that validate paths could misbehave, potentially allowing path traversal attacks or malicious filesystem operations.\n\n\n\n\nRust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.\n\n\n\nWhile we assess the severity of this vulnerability as \"medium\", please note that the tier 3 Cygwin compilation target is only available when building it from source: no pre-built binaries are distributed by the Rust project, and it cannot be installed through Rustup. Unless you manually compiled the `x86_64-pc-cygwin` target you are not affected by this vulnerability. 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Unless you manually compiled the `x86_64-pc-cygwin` target you are not affected by this vulnerability. Users of the tier 1 MinGW target (`x86_64-pc-windows-gnu`) are also explicitly not affected.</div><div></div>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "providerMetadata": {"orgId": "986d4109-89ea-491f-99fd-a8e4803919bd", "shortName": "rust", "dateUpdated": "2025-10-01T17:00:18.704Z"}}}, "cveMetadata": {"cveId": "CVE-2025-11233", "state": "PUBLISHED", "dateUpdated": "2025-10-01T17:35:23.572Z", "dateReserved": "2025-10-01T16:38:24.568Z", "assignerOrgId": "986d4109-89ea-491f-99fd-a8e4803919bd", "datePublished": "2025-10-01T16:49:50.139Z", "assignerShortName": "rust"}, "dataVersion": "5.1"}

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Due to this, programs compiled for Cygwin that validate paths could misbehave, potentially allowing path traversal attacks or malicious filesystem operations.\n\n\n\n\nRust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.\n\n\n\nWhile we assess the severity of this vulnerability as \"medium\", please note that the tier 3 Cygwin compilation target is only available when building it from source: no pre-built binaries are distributed by the Rust project, and it cannot be installed through Rustup. Unless you manually compiled the `x86_64-pc-cygwin` target you are not affected by this vulnerability. Users of the tier 1 MinGW target (`x86_64-pc-windows-gnu`) are also explicitly not affected."}, {"lang": "es", "value": "A partir de Rust 1.87.0 y antes de Rust 1.89.0, el objetivo Cygwin de nivel 3 ('x86_64-pc-cygwin') no manejaba correctamente los separadores de ruta, lo que provocaba que la API Path de la biblioteca est\u00e1ndar ignorara los componentes de ruta separados por barras invertidas. Debido a esto, los programas compilados para Cygwin que validan rutas podr\u00edan comportarse de forma inesperada, permitiendo potencialmente ataques de salto de ruta u operaciones maliciosas del sistema de archivos.\n\nRust 1.89.0 corrige el problema al manejar rutas de estilo Win32 y Unix en la biblioteca est\u00e1ndar para el objetivo Cygwin.\n\nAunque evaluamos la gravedad de esta vulnerabilidad como 'media', tenga en cuenta que el objetivo de compilaci\u00f3n Cygwin de nivel 3 solo est\u00e1 disponible al compilarlo desde el c\u00f3digo fuente: el proyecto Rust no distribuye binarios precompilados y no se puede instalar a trav\u00e9s de Rustup. A menos que haya compilado manualmente el objetivo 'x86_64-pc-cygwin', no se ve afectado por esta vulnerabilidad. Los usuarios del objetivo MinGW de nivel 1 ('x86_64-pc-windows-gnu') tampoco se ven afectados expl\u00edcitamente."}], "id": "CVE-2025-11233", "lastModified": "2026-10-09T09:10:00.213", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "YES", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "GREEN", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:L/U:Green", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "LOW"}, "source": "986d4109-89ea-491f-99fd-a8e4803919bd", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-11233", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T17:21:57.111508Z", "version": "2.0.3"}}]}, "published": "2025-10-01T17:15:38.553", "references": [{"source": "986d4109-89ea-491f-99fd-a8e4803919bd", "url": "https://github.com/rust-lang/rust/pull/141864"}, {"source": "986d4109-89ea-491f-99fd-a8e4803919bd", "url": "https://groups.google.com/g/rustlang-security-announcements/c/oT9zCvLLYkw"}], "sourceIdentifier": "986d4109-89ea-491f-99fd-a8e4803919bd", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "986d4109-89ea-491f-99fd-a8e4803919bd", "type": "Secondary"}]}

{"bugzilla": {"description": "rust: Rust standard library didn't detect all path separators on Cygwin", "id": "2400867", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400867"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-22", "details": ["Starting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn't correctly handle path separators, causing the standard library's Path API to ignore path components separated by backslashes. Due to this, programs compiled for Cygwin that validate paths could misbehave, potentially allowing path traversal attacks or malicious filesystem operations.\nRust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.\nWhile we assess the severity of this vulnerability as \"medium\", please note that the tier 3 Cygwin compilation target is only available when building it from source: no pre-built binaries are distributed by the Rust project, and it cannot be installed through Rustup. Unless you manually compiled the `x86_64-pc-cygwin` target you are not affected by this vulnerability. Users of the tier 1 MinGW target (`x86_64-pc-windows-gnu`) are also explicitly not affected."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2025-11233", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "rust-toolset:rhel8/rust", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-01T16:49:50Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-11233\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-11233\nhttps://github.com/rust-lang/rust/pull/141864"], "threat_severity": "Moderate"}

{"created": "2025-10-02T08:38:23.765722+00:00", "updated": "2025-10-02T08:38:23.765782+00:00", "vendors": ["rust-lang", "rust-lang$PRODUCT$rust"]}