CVE-2025-11233 (GCVE-0-2025-11233)
Vulnerability from cvelistv5 – Published: 2025-10-01 16:49 – Updated: 2025-10-01 17:35
VLAI
EPSS
VEX
Title
Rust standard library didn't detect all path separators on Cygwin
Summary
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.
Rust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 17:21 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rust-lang/rust/pull/141864 | patch |
| https://groups.google.com/g/rustlang-security-ann… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Rust Project | std |
Affected:
1.87.0 , < 1.89.0
(semver)
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-11233",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T17:21:57.111508Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T17:35:23.572Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Windows"
],
"product": "std",
"repo": "https://github.com/rust-lang/rust",
"vendor": "Rust Project",
"versions": [
{
"lessThan": "1.89.0",
"status": "affected",
"version": "1.87.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cdiv\u003e\u003c/div\u003e\u003cdiv\u003eStarting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn\u0027t correctly handle path separators, causing the standard library\u0027s 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.\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003eRust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.\u003cbr\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eWhile 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.\u003c/div\u003e\u003cdiv\u003e\u003c/div\u003e"
}
],
"value": "Starting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn\u0027t correctly handle path separators, causing the standard library\u0027s 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. Users of the tier 1 MinGW target (`x86_64-pc-windows-gnu`) are also explicitly not affected."
}
],
"impacts": [
{
"capecId": "CAPEC-126",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-126 Path Traversal"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"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/AU:Y/RE:L/U:Green",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "LOW"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T17:00:18.704Z",
"orgId": "986d4109-89ea-491f-99fd-a8e4803919bd",
"shortName": "rust"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/rust-lang/rust/pull/141864"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://groups.google.com/g/rustlang-security-announcements/c/oT9zCvLLYkw"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "We recommend users of Cygwin targets to upgrade to 1.89.0 or a later version."
}
],
"value": "We recommend users of Cygwin targets to upgrade to 1.89.0 or a later version."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Rust standard library didn\u0027t detect all path separators on Cygwin",
"x_generator": {
"engine": "meow :3"
}
}
},
"cveMetadata": {
"assignerOrgId": "986d4109-89ea-491f-99fd-a8e4803919bd",
"assignerShortName": "rust",
"cveId": "CVE-2025-11233",
"datePublished": "2025-10-01T16:49:50.139Z",
"dateReserved": "2025-10-01T16:38:24.568Z",
"dateUpdated": "2025-10-01T17:35:23.572Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-11233",
"date": "2026-10-09",
"epss": "0.00517",
"percentile": "0.42188"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"platforms": [
"Windows"
],
"product": "std",
"repo": "https://github.com/rust-lang/rust",
"vendor": "Rust Project",
"versions": [
{
"lessThan": "1.89.0",
"status": "affected",
"version": "1.87.0",
"versionType": "semver"
}
]
}
],
"source": "986d4109-89ea-491f-99fd-a8e4803919bd"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Starting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn\u0027t correctly handle path separators, causing the standard library\u0027s 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. 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 (\u0027x86_64-pc-cygwin\u0027) 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 \u0027media\u0027, 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 \u0027x86_64-pc-cygwin\u0027, no se ve afectado por esta vulnerabilidad. Los usuarios del objetivo MinGW de nivel 1 (\u0027x86_64-pc-windows-gnu\u0027) 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"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-27T18:30:11+00:00",
"cve": "CVE-2025-11233",
"id": "CVE-2025-11233",
"initial_release_date": "2025-10-01T16:49:50.139000+00:00",
"product_status:fixed": "4",
"product_status:known_not_affected": "51",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "rust: Rust standard library didn\u0027t detect all path separators on Cygwin",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-11233.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-31T00:23:51Z",
"cve": "CVE-2025-11233",
"id": "CVE-2025-11233",
"initial_release_date": "2025-10-02T23:31:30Z",
"product_status:known_not_affected": "325",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-11233",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-11233.json",
"version": "8"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-11233",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T17:21:57.111508Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T17:22:03.236Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Windows"
],
"product": "std",
"repo": "https://github.com/rust-lang/rust",
"vendor": "Rust Project",
"versions": [
{
"lessThan": "1.89.0",
"status": "affected",
"version": "1.87.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cdiv\u003e\u003c/div\u003e\u003cdiv\u003eStarting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn\u0027t correctly handle path separators, causing the standard library\u0027s 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.\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003eRust 1.89.0 fixes the issue by handling both Win32 and Unix style paths in the standard library for the Cygwin target.\u003cbr\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eWhile 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.\u003c/div\u003e\u003cdiv\u003e\u003c/div\u003e"
}
],
"value": "Starting from Rust 1.87.0 and before Rust 1.89.0, the tier 3 Cygwin target (`x86_64-pc-cygwin`) didn\u0027t correctly handle path separators, causing the standard library\u0027s 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. Users of the tier 1 MinGW target (`x86_64-pc-windows-gnu`) are also explicitly not affected."
}
],
"impacts": [
{
"capecId": "CAPEC-126",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-126 Path Traversal"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"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/AU:Y/RE:L/U:Green",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "LOW"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T17:00:18.704Z",
"orgId": "986d4109-89ea-491f-99fd-a8e4803919bd",
"shortName": "rust"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/rust-lang/rust/pull/141864"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://groups.google.com/g/rustlang-security-announcements/c/oT9zCvLLYkw"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "We recommend users of Cygwin targets to upgrade to 1.89.0 or a later version."
}
],
"value": "We recommend users of Cygwin targets to upgrade to 1.89.0 or a later version."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Rust standard library didn\u0027t detect all path separators on Cygwin",
"x_generator": {
"engine": "meow :3"
}
}
},
"cveMetadata": {
"assignerOrgId": "986d4109-89ea-491f-99fd-a8e4803919bd",
"assignerShortName": "rust",
"cveId": "CVE-2025-11233",
"datePublished": "2025-10-01T16:49:50.139Z",
"dateReserved": "2025-10-01T16:38:24.568Z",
"dateUpdated": "2025-10-01T17:35:23.572Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…