CVE-2025-11233
rust: Rust standard library didn't detect all path separators on Cygwin
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 2, 2025
Updated · October 15, 2026
Description
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
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.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')