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    CVE-2026-63623

    A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents. This vulnerability could lead to sensitive information disclosure from guest virtual machines.

    Published:Jul 30, 2026
    Last Modified:Aug 11, 2026
    EPS:Aug 10, 2026
    EPSS Score:0.00095
    CVSS Score:5.5

    Affected Products

    Vendor
    Libvirt
    Product
    Libvirt
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux For Nvidia 26
    Vendor
    Redhat
    Product
    Enterprise Linux Nvidia

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-61477 (CVSS 2.3) — An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not stri…
    CVE-2026-63622 (CVSS 7.8) — A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, co…
    CVE-2015-5160 (CVSS 5.5) — libvirt before 2.2 includes Ceph credentials on the qemu command line when using RADOS Block Device (aka RBD),…
    CVE-2014-3657 (CVSS 5) — The virDomainListPopulate function in conf/domain_conf.c in libvirt before 1.2.9 does not clean up the lock on…
    CVE-2014-3633 (CVSS 5.8) — The qemuDomainGetBlockIoTune function in qemu/qemu_driver.c in libvirt before 1.2.9, when a disk has been hot-…
    CVE-2010-2242 (CVSS 2.1) — Red Hat libvirt 0.2.0 through 0.8.2 creates iptables rules with improper mappings of privileged source ports, …
    CVE-2010-2238 (CVSS 4.4) — Red Hat libvirt, possibly 0.7.2 through 0.8.2, recurses into disk-image backing stores without extracting the …
    CVE-2010-2237 (CVSS 4.4) — Red Hat libvirt, possibly 0.6.1 through 0.8.2, looks up disk backing stores without referring to the user-defi…
    CVE-2010-2239 (CVSS 4.4) — Red Hat libvirt, possibly 0.6.0 through 0.8.2, creates new images without setting the user-defined backing-sto…
    CVE-2009-0036 (CVSS 4.4) — Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might al…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High