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
Published Apr 18, 2014
4.0
MEDIUMCVSS 2.0
EPSS 2.58%
Description
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.
Affected products
No data.
- 7.27.0
- 7.28.0
- 7.28.1
- 7.29.0
- 7.30.0
- 7.31.0
- 7.32.0
- 7.33.0
- 7.34.0
- 7.35.0
- 7.27.0
- 7.28.0
- 7.28.1
- 7.29.0
- 7.30.0
- 7.31.0
- 7.32.0
- 7.33.0
- 7.34.0
- 7.35.0
- 7.36.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.58% (0.02576) | 84.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.58% (0.02576) | 83.12th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.24% (0.00245) | 45.88th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.29% (0.00295) | 70.12th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.29% (0.00295) | 68.45th | v3 (v2023.03.01) |
| Nov 29, 2023 | 0.29% (0.00295) | 65.93th | v3 (v2023.03.01) |
| May 13, 2023 | 0.29% (0.00290) | 64.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.37% (0.00368) | 68.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (12)
- http://curl.haxx.se/docs/adv_20140326D.html x_refsource_CONFIRMPatchVendor Advisory
- http://seclists.org/oss-sec/2014/q1/585 mailing-listx_refsource_MLIST
- http://seclists.org/oss-sec/2014/q1/586 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/57836 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/57966 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/57968 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/59458 third-party-advisoryx_refsource_SECUNIA
- http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862 x_refsource_CONFIRM
- http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/ x_refsource_CONFIRM
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/ x_refsource_CONFIRM
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/ x_refsource_CONFIRM
- http://www.securityfocus.com/bid/66296 vdb-entryx_refsource_BID
Change history (0)
No recorded changes yet.