curl: Unitialized random
Published Apr 23, 2018
8.1
HIGHCVSS 3.0
EPSS 2.26%
Description
curl before version 7.52.1 is vulnerable to an uninitialized random in libcurl's internal function that returns a good 32bit random value. Having a weak or virtually non-existent random value makes the operations that use it vulnerable.
Affected products
- Vendor n/a Product Curl Defaultn/a
- Version curl 7.52.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Curl | n/a |
|
No data.
.NET Core 1.0 on Red Hat Enterprise Linux
rh-dotnetcore10-curl
Not affected
.NET Core 1.1 on Red Hat Enterprise Linux
rh-dotnetcore11-curl
Not affected
.NET Core 2.0 on Red Hat Enterprise Linux
rh-dotnet20-curl
Not affected
Red Hat Enterprise Linux 5
curl
Not affected
Red Hat Enterprise Linux 6
curl
Not affected
Red Hat Enterprise Linux 7
curl
Not affected
Red Hat Enterprise Virtualization 3
mingw-virt-viewer
Not affected
Red Hat JBoss Enterprise Web Server 3
curl
Not affected
Red Hat Software Collections
httpd24-curl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore10-curl | Not affected | n/a |
| .NET Core 1.1 on Red Hat Enterprise Linux | rh-dotnetcore11-curl | Not affected | n/a |
| .NET Core 2.0 on Red Hat Enterprise Linux | rh-dotnet20-curl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 7 | curl | Not affected | n/a |
| Red Hat Enterprise Virtualization 3 | mingw-virt-viewer | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | curl | Not affected | n/a |
| Red Hat Software Collections | httpd24-curl | Not affected | n/a |
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.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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
YesTechnical Impact
PartialDecision
n/aAssessed Apr 15, 2026 · 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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.26% (0.02260) | 82.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.67% (0.02674) | 83.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.15% (0.01146) | 76.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.61% (0.02607) | 76.03th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.15% (0.01146) | 76.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.24% (0.01243) | 86.10th | v3 (v2023.03.01) |
| Oct 24, 2023 | 1.24% (0.01243) | 83.98th | v3 (v2023.03.01) |
| Sep 14, 2023 | 1.16% (0.01157) | 83.15th | v3 (v2023.03.01) |
| May 22, 2023 | 1.30% (0.01300) | 83.84th | v3 (v2023.03.01) |
| May 8, 2023 | 1.29% (0.01289) | 83.74th | v3 (v2023.03.01) |
| Apr 17, 2023 | 1.81% (0.01810) | 86.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.21% (0.02213) | 87.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (10)
- http://www.securityfocus.com/bid/95094 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037528 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2016-9594 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1408385 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9594 x_refsource_MISCIssue TrackingThird Party Advisory
- https://curl.haxx.se/docs/adv_20161223.html x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-9594
- https://security.gentoo.org/glsa/201701-47 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-9594
- https://www.tenable.com/security/tns-2017-04 x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/95094 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1037528 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2016-9594 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1408385 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9594 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://curl.haxx.se/docs/adv_20161223.html | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-9594 | ||
| https://security.gentoo.org/glsa/201701-47 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2016-9594 | ||
| https://www.tenable.com/security/tns-2017-04 | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.