CVE-2025-10966: missing SFTP host verification with wolfSSH
curl's code for managing SSH connections when SFTP was done using the wolfSSH
powered backend was flawed and missed host verification mechanisms.
This prevents curl from detecting MITM attackers and more.
Security readout for executives and security teams
curl could fail to verify the SFTP server identity when built with the wolfSSH backend. A person in the right network position could impersonate the server, and curl may not detect it. The main business risk is exposure of data transferred over affected SFTP workflows. Exposure is limited to curl or libcurl deployments built with wolfSSH support and used for SFTP. Systems using other SSH backends, not using SFTP, or not running listed affected versions are less likely exposed based on the source bundle. Treat as a targeted, moderate confidentiality risk. Prioritize internet-facing, partner-facing, automated, or sensitive SFTP transfers that depend on curl. Broad emergency response is not supported by the provided evidence. Mitigation focus: Inventory curl and libcurl versions across servers, containers, appliances, and developer images.; Identify whether curl is built with the wolfSSH-powered SSH backend.; Upgrade using curl or operating-system vendor guidance to a version not listed as affected..
Prepared
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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cwe · low confidence lookup
CWE-322: Exact CWE lookup
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CWE-322 · source CWE mapping
Key Exchange without Entity Authentication
Key Exchange without Entity Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.