CVE-2025-4947
QUIC certificate check skip with wolfSSL
MEDIUM
6.5
CVSS Score
Published: May 28, 2025 at 06:29 AM UTC
Updated: June 17, 2026 at 09:34 AM UTC
1 product affected across 1 vendorCurl
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
PoC
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
PatchVendor Advisory
Source: 2499f714-1537-4658-8207-48ae4bb9eae9
https://curl.se/docs/CVE-2025-4947.htmlExploitIssue TrackingPatch
Source: 2499f714-1537-4658-8207-48ae4bb9eae9
https://hackerone.com/reports/3150884Mailing ListPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/05/28/4SSVC — Action Prioritization
SSVCPoCNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.5MEDIUMCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-295
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