4.3Medium
Haxx Curl
CVE-2025-10966
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.
What this means for your business
- It affects Haxx Curl. It matters if your company, or a supplier that handles your data, runs it.
- Code showing how to exploit it has been published, but real attacks have not been confirmed.
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Haxx Curl, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 4.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness
- CWE-322
- Assigned by
- 2499f714-1537-4658-8207-48ae4bb9eae9
Dates
- Published
- 2025-11-07
- Last modified
- 2026-09-15
- Sources
- NVD
Affected products
- Haxx Curl7.69.0 - 8.17.0
As listed in the NVD configuration data. Not a statement about your estate.