CVE-2025-4947 | BDVDB-2026-280412 Detail

curlcurl

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

CWE-295 Improper Certificate Validation

References#

Exploit#

No public exploit known

History#

Version 12025-05-28Record published in the CVE List.

Published

Published: 2025-05-28
Last modified: 2025-05-28

Vendor information

Vendor: curl
Product: curl

All curl vulnerabilities

Score

6.5 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 22.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 8.13.0 and <= 8.13.0
Fixed
Not stated
Vulnerable
>= 8.12.1 and <= 8.12.1
Fixed
Not stated
Vulnerable
>= 8.12.0 and <= 8.12.0
Fixed
Not stated
Vulnerable
>= 8.11.1 and <= 8.11.1
Fixed
Not stated
Vulnerable
>= 8.11.0 and <= 8.11.0
Fixed
Not stated
Vulnerable
>= 8.10.1 and <= 8.10.1
Fixed
Not stated
Vulnerable
>= 8.10.0 and <= 8.10.0
Fixed
Not stated
Vulnerable
>= 8.9.1 and <= 8.9.1
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.5 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).