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CRITICAL

CVE-2025-0665

CVSS v3

9.8

CRITICAL

EPSS Score

1.3 %

exploit probability, as of 2026-10-03

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

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

Technical details

Published
2025-02-05

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.

Is CVE-2025-0665 actively exploited?

Active exploitation of CVE-2025-0665 has not been confirmed. Its EPSS score was 1.3% on 2026-10-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-0665?

CVE-2025-0665 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2025-0665 affecting your environment?

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