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Vulnerability record · CVE-2016-5421 · published 10 August 2016

CVE-2016-5421: Opensuse leap use after free vulnerability

Opensuse · Leap

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

8.1 CVSS 3.1 High EPSS 8.0% · top 5.4% CWE-416 · Use after free
8.1CVSS 3.1 base score, v2 6.8
8.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
30References
17 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2016-09/msg00011.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3638 Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html PatchThird Party Advisory
http://www.securityfocus.com/bid/92306 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036536 Third Party AdvisoryVDB Entry
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.563059 Third Party Advisory
http://www.ubuntu.com/usn/USN-3048-1 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3558 Third Party Advisory
https://curl.haxx.se/docs/adv_20160803C.html MitigationVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3
https://security.gentoo.org/glsa/201701-47 Third Party Advisory
https://source.android.com/security/bulletin/2016-12-01.html Third Party Advisory
https://www.tenable.com/security/tns-2016-18 Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-09/msg00011.html Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-09/msg00094.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3638 Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html PatchThird Party Advisory
http://www.securityfocus.com/bid/92306 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036536 Third Party AdvisoryVDB Entry
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.563059 Third Party Advisory
http://www.ubuntu.com/usn/USN-3048-1 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3558 Third Party Advisory
https://curl.haxx.se/docs/adv_20160803C.html MitigationVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3
https://security.gentoo.org/glsa/201701-47 Third Party Advisory
https://source.android.com/security/bulletin/2016-12-01.html Third Party Advisory
https://www.tenable.com/security/tns-2016-18 Third Party Advisory

Track CVE-2016-5421 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Source: NIST National Vulnerability Database (record CVE-2016-5421), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.