CVE-2025-0665

HIGH

Published Feb 5, 2025 Modified Mar 17, 2026

Description

libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve.

Is your site exposed to CVE-2025-0665?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.0

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected Products

Vendor	Product	Versions
haxx	curl	All
netapp	bootstrap_os	All
netapp	hci_compute_node	All
netapp	h300s_firmware	All
netapp	h300s	All
netapp	h410c_firmware	All
netapp	h410c	All
netapp	h410s_firmware	All
netapp	h410s	All
netapp	h500s_firmware	All
netapp	h500s	All
netapp	h700s_firmware	All
netapp	h700s	All

References

Advisories & Patches

https://curl.se/docs/CVE-2025-0665.html https://curl.se/docs/CVE-2025-0665.json

Exploits

https://hackerone.com/reports/2954286

Other References

http://www.openwall.com/lists/oss-security/2025/02/05/2 http://www.openwall.com/lists/oss-security/2025/02/05/5 https://security.netapp.com/advisory/ntap-20250306-0007/

Frequently Asked Questions

What is CVE-2025-0665? +

libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2025-0665? +

CVE-2025-0665 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-0665? +

CVE-2025-0665 affects products from haxx, netapp, specifically: bootstrap_os, curl, h300s, h300s_firmware, h410c, h410c_firmware, h410s, h410s_firmware, h500s, h500s_firmware, h700s, h700s_firmware, hci_compute_node. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-0665? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-8925 9.8

The curl logic that works with SASL authentication could end up cleaning up the GSASL context *twice* without clearing the …

CVE-2026-9079 9.8

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the …

CVE-2026-10536 9.8

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or `CURLOPT_STREAM_DEPENDS_E`, subsequently invokes …

CVE-2026-11856 9.8

Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the …

CVE-2026-11564 9.1

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the …

CVE-2026-8924 9.1

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public …