CVE-2025-4947
6.5
MEDIUM
CVSS 3.1
EPSS 0.07%
Description
libcurl accidentally skips the certificate verification for QUIC connections when connecting to a host specified as an IP address in the URL. Therefore, it does not detect impostors or man-in-the-middle attacks.
How to fix CVE-2025-4947
To remediate CVE-2025-4947, upgrade the affected package to a fixed version below.
- Alpine/curl—upgrade to 8.14.0-r0 or later
- Debian/curl—upgrade to 8.14.0-1 or later
Is CVE-2025-4947 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 8.14.0-r0
- from 0, < 8.14.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |