The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."
Published Mar 12, 2018
8.1
HIGHCVSS 3.1
EPSS 1.28%
Description
The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."
Affected products
No data.
Running on/with
- n/a
-
- Version 7.27.0StatusaffectedConstraints<=7.51.0
- Version
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Jul 23, 2024 · SSVC 2.0.3
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.28% (0.01276) | 68.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.30% (0.01300) | 66.60th | v5 (v2026.06.15) |
| May 18, 2025 | 1.06% (0.01059) | 76.51th | v4 (v2025.03.14) |
| May 4, 2025 | 4.19% (0.04186) | 88.07th | v4 (v2025.03.14) |
| May 1, 2025 | 2.68% (0.02676) | 85.04th | v4 (v2025.03.14) |
| Apr 8, 2025 | 4.83% (0.04833) | 88.57th | v4 (v2025.03.14) |
| Apr 7, 2025 | 2.68% (0.02676) | 84.57th | v4 (v2025.03.14) |
| Apr 5, 2025 | 4.83% (0.04833) | 88.57th | v4 (v2025.03.14) |
| Apr 4, 2025 | 2.68% (0.02676) | 84.57th | v4 (v2025.03.14) |
| Apr 3, 2025 | 4.83% (0.04833) | 88.55th | v4 (v2025.03.14) |
| Apr 2, 2025 | 2.68% (0.02676) | 84.56th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.83% (0.04833) | 88.78th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00181) | 56.61th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.18% (0.00181) | 55.48th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00181) | 53.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (2)
- https://curl.haxx.se/CVE-2016-9952.patch x_refsource_CONFIRMVendor Advisory
- https://curl.haxx.se/docs/adv_20161221B.html x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://curl.haxx.se/CVE-2016-9952.patch | x_refsource_CONFIRMVendor Advisory | |
| https://curl.haxx.se/docs/adv_20161221B.html | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.