CVE-2025-4947

MEDIUM EPSS 14.5%
Published May 28, 20251y ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published May 28, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
14.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-295

Affected Products 1

VendorProductVersionRange
haxxcurl*≥8.8.0  –  <8.14.0

References 4

  • openwall.com http://www.openwall.com/lists/oss-security/2025/05/28/4
    Mailing ListPatchThird Party Advisory
  • curl.se https://curl.se/docs/CVE-2025-4947.html
    PatchVendor Advisory
  • curl.se https://curl.se/docs/CVE-2025-4947.json
    Vendor Advisory
  • hackerone.com https://hackerone.com/reports/3150884
    ExploitIssue TrackingPatch

Remediation

  • openwall.com http://www.openwall.com/lists/oss-security/2025/05/28/4
    Mailing ListPatchThird Party Advisory
  • curl.se https://curl.se/docs/CVE-2025-4947.html
    PatchVendor Advisory
  • hackerone.com https://hackerone.com/reports/3150884
    ExploitIssue TrackingPatch