What’s Vulnerable › Vulnerabilities

CVE-2016-5008

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-07-13 · updated 2026-06-17
• Weakness: CWE-284

Description

libvirt before 2.0.0 improperly disables password checking when the password on a VNC server is set to an empty string, which allows remote attackers to bypass authentication and establish a VNC session by connecting to the server.

Affected products

• Debian Linux: 8.0
• libvirt: through 1.3.5

References

• http://lists.opensuse.org/opensuse-updates/2016-07/msg00054.html
• http://lists.opensuse.org/opensuse-updates/2016-07/msg00055.html
• http://lists.opensuse.org/opensuse-updates/2016-08/msg00024.html
• http://rhn.redhat.com/errata/RHSA-2016-2577.html
• http://security.libvirt.org/2016/0001.html
• http://www.debian.org/security/2016/dsa-3613
• http://www.securityfocus.com/bid/91562
• https://bugzilla.redhat.com/show_bug.cgi?id=1180092
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZZMOMRXNPALA34XDF5NK363KDLAYSTL/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QTQF6LXKEEMJG4VOOCIAPJAD6ACBYP4W/
• https://usn.ubuntu.com/3576-1/
• http://lists.opensuse.org/opensuse-updates/2016-07/msg00054.html

Get alerted when CVE-2016-5008 or the next vulnerability affects your stack