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CVE-2025-4947

QUIC certificate check skip with wolfSSL

Published: May 28, 2025Updated: Jun 26, 2025 Sources: CVE List NVD BDUCWE-295
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.2%
Top 85.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-295

Affected Products

LibcurlDaniel Stenberg
LibraryLibrary
OSS Libraries / generic-library
curlhaxxOSS Libraries
curlcurl
Library
OSS Libraries / generic-library
daniel stenbergindividual-devOSS Librariesaka daniel.haxx.se, daniel stenberg (curl author)
haxxoss-projectSEOSS Librariesaka haxx.se
curloss-projectUSOSS Librariesaka libcurl, wcurl

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://curl.se/docs/CVE-2025-4947.json
curl.se
https://curl.se/docs/CVE-2025-4947.html
curl.se
https://www.openwall.com/lists/oss-security/2025/05/28/4
openwall.com
and 4 more references View all →

Timeline

Published
May 28, 2025
Last Updated
Jun 26, 2025

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