CVE-2025-4947
libcurl QUIC Certificate Verification Bypass
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.
INFO
Published Date :
May 28, 2025, 7:15 a.m.
Last Modified :
June 26, 2025, 3:08 p.m.
Source :
2499f714-1537-4658-8207-48ae4bb9eae9
Remotely Exploitable :
Yes !
Impact Score :
2.5
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2025-4947 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-4947.
| URL | Resource |
|---|---|
| https://curl.se/docs/CVE-2025-4947.html | Vendor Advisory Patch |
| https://curl.se/docs/CVE-2025-4947.json | Vendor Advisory |
| https://hackerone.com/reports/3150884 | Exploit Patch Issue Tracking |
| http://www.openwall.com/lists/oss-security/2025/05/28/4 | Mailing List Patch Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Makefile Smarty Dockerfile Shell HCL JavaScript Go HTML TypeScript CSS
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-4947 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-4947 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 26, 2025
Action Type Old Value New Value Added CWE CWE-295 Added CPE Configuration OR *cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* versions from (including) 8.8.0 up to (excluding) 8.14.0 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2025/05/28/4 Types: Mailing List, Patch, Third Party Advisory Added Reference Type curl: https://curl.se/docs/CVE-2025-4947.html Types: Patch, Vendor Advisory Added Reference Type curl: https://curl.se/docs/CVE-2025-4947.json Types: Vendor Advisory Added Reference Type curl: https://hackerone.com/reports/3150884 Types: Exploit, Issue Tracking, Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 28, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
May. 28, 2025
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2025/05/28/4 -
New CVE Received by 2499f714-1537-4658-8207-48ae4bb9eae9
May. 28, 2025
Action Type Old Value New Value Added 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. Added Reference https://curl.se/docs/CVE-2025-4947.html Added Reference https://curl.se/docs/CVE-2025-4947.json Added Reference https://hackerone.com/reports/3150884
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-4947 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-4947
weaknesses.