CVE-2025-5025

Name: CVE-2025-5025
Creator: NVD / NIST
Published: 2025-05-28T07:15:24.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.24%

Last modified Jun 17, 2026

CVE-2025-5025 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. libcurl supports *pinning* of the server certificate public key for HTTPS transfers. Due to an omission, this check is not performed when connecting with QUIC for HTTP/3, when the TLS backend is wolfSSL. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

libcurl supports *pinning* of the server certificate public key for HTTPS transfers. Due to an omission, this check is not performed when connecting with QUIC for HTTP/3, when the TLS backend is wolfSSL. Documentation says the option works with wolfSSL, failing to specify that it does not for QUIC and HTTP/3. Since pinning makes the transfer succeed if the pin is fine, users could unwittingly connect to an impostor server without noticing.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.24%

15.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Haxx	Curl	>= 8.5.0, < 8.14.0

References

https://curl.se/docs/CVE-2025-5025.htmlVendor Advisory
https://curl.se/docs/CVE-2025-5025.jsonVendor Advisory
https://hackerone.com/reports/3153497Exploit, Issue Tracking, Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/05/28/5Mailing List, Third Party Advisory

Timeline

Published: May 28, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-5025?

How severe is CVE-2025-5025?

CVE-2025-5025 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.

How do I fix CVE-2025-5025?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-5025?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST