What’s Vulnerable › Vulnerabilities

CVE-2016-9594

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-23 · updated 2026-06-17
• Weakness: CWE-665

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

• curl: before 7.52.1 — fixed in 7.52.1

How to fix

Upgrade to a fixed version: curl 7.52.1. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/95094
• http://www.securitytracker.com/id/1037528
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9594
• https://curl.haxx.se/docs/adv_20161223.html
• https://security.gentoo.org/glsa/201701-47
• https://www.tenable.com/security/tns-2017-04
• http://www.securityfocus.com/bid/95094
• http://www.securitytracker.com/id/1037528
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9594
• https://curl.haxx.se/docs/adv_20161223.html
• https://security.gentoo.org/glsa/201701-47
• https://www.tenable.com/security/tns-2017-04

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