Vulnerability in Curl

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.

EPSS: 0.013 (66.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.

Affected products

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-0665?
CVE-2025-0665 is a high-severity vulnerability in Curl, classified under CWE-1341 MULTIPLE RELEASES OF SAME RESOURCE OR HANDLE. CVSS score: 7.0/10. Published 2025-02-05.
How severe is CVE-2025-0665?
High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2025-0665 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.