CVE-2025-11233

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/rust-lang/rust/pull/141864
https://groups.google.com/g/rustlang-security-announcements/c/oT9zCvLLYkw

Configurations

No configuration.

History

01 Oct 2025, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-01 17:15

Updated : 2025-10-02 19:11

NVD link : CVE-2025-11233

Mitre link : CVE-2025-11233

CVE.ORG link : CVE-2025-11233

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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