CVE-2014-2522
curl and libcurl 7.27.0 through 7.35.0, when running on Windows and using the SChannel/Winssl TLS backend, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate when accessing a URL that uses a numerical IP address, which allows man-in-the-middle attackers to spoof servers via an arbitrary valid certificate.
Key facts
- CVSS score
- 4.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:H/Au:N/C:P/I:P/A:N- Weakness (CWE)
- CWE-20
- EPSS score
- 2.6% (86th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2014-2558)
- Published
- April 18, 2014
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2014-2558 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / curl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- haxx / libcurl
- microsoft / windows
References
- http://curl.haxx.se/docs/adv_20140326D.html(Patch, Vendor Advisory)
- http://seclists.org/oss-sec/2014/q1/585
- http://seclists.org/oss-sec/2014/q1/586
- http://secunia.com/advisories/57836(Vendor Advisory)
- http://secunia.com/advisories/57966(Vendor Advisory)
- http://secunia.com/advisories/57968(Vendor Advisory)
- http://secunia.com/advisories/59458
- http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
- http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
- http://www.securityfocus.com/bid/66296
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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