What’s Vulnerable › Vulnerabilities

CVE-2016-8618

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-31 · updated 2026-06-17
• Weakness: CWE-416

Description

The libcurl API function called `curl_maprintf()` before version 7.51.0 can be tricked into doing a double-free due to an unsafe `size_t` multiplication, on systems using 32 bit `size_t` variables.

Affected products

• curl: before 7.51.0 — fixed in 7.51.0

How to fix

Upgrade to a fixed version: curl 7.51.0. Check the vendor advisory for mitigations.

References

• http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
• http://www.securityfocus.com/bid/94098
• http://www.securitytracker.com/id/1037192
• https://access.redhat.com/errata/RHSA-2018:2486
• https://access.redhat.com/errata/RHSA-2018:3558
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8618
• https://curl.haxx.se/docs/adv_20161102D.html
• https://security.gentoo.org/glsa/201701-47
• https://www.tenable.com/security/tns-2016-21
• http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
• http://www.securityfocus.com/bid/94098
• http://www.securitytracker.com/id/1037192

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