CVE-2025-10966

low-risk

Published 2025-11-07

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.

Do I need to act?

0.02% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 4.3/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Curl

Affected Vendors

Haxx

References (4)

Vendor Advisory https://curl.se/docs/CVE-2025-10966.html

Vendor Advisory https://curl.se/docs/CVE-2025-10966.json

Exploit https://hackerone.com/reports/3355218

Mailing List http://www.openwall.com/lists/oss-security/2025/11/05/2

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low-risk

Severity 18/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal