{"id":"CVE-2026-12080","aliases":["ALSA-2026:88421","AZL-93006","BELL-CVE-2026-12080","DEBIAN-CVE-2026-12080","EUVD-2026-45941","GHSA-9xqq-92hv-jj34","OESA-2026-4084","OESA-2026-4085","OESA-2026-4086","OESA-2026-4087","RLSA-2026:88421","UBUNTU-CVE-2026-12080"],"status":"published","title":"Qemu-kvm: qemu-guest-agent: local privilege escalation via symlink attack in guest-ssh-add-authorized-keys","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0014,"percentile":0.03422,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-61"],"published":"2026-07-14T06:03:10.41662Z","modified":"2026-11-09T16:28:25Z","exploits":[{"source":"pocgithub","id":"M8seven/cve-2026-12080-qemu-guest-agent-authorized-keys","title":"M8seven/cve-2026-12080-qemu-guest-agent-authorized-keys","date":"2026-10-22","url":"https://github.com/M8seven/cve-2026-12080-qemu-guest-agent-authorized-keys"}],"fixes":[{"ecosystem":"AlmaLinux:9","package":"qemu-guest-agent","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-img","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-audio-pa","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-block-blkio","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-block-curl","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-block-rbd","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-common","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-core","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-device-display-virtio-gpu","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-device-display-virtio-gpu-ccw","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-device-display-virtio-gpu-pci","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-device-display-virtio-vga","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-device-usb-host","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-device-usb-redirect","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-docs","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-tools","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-ui-egl-headless","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-kvm-ui-opengl","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:9","package":"qemu-pr-helper","fixed_in":["17:10.1.0-17.el9_8.9.alma.1"],"sources":["osv"]},{"ecosystem":"Alpaquita:23","package":"qemu","fixed_in":["9.0.4-r5"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"qemu","fixed_in":["10.0.15-r0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:11.1.2+ds-1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP4","package":"qemu","fixed_in":["8.2.0-89.oe2403sp4"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"qemu","fixed_in":["6.2.0-120.oe2203sp4"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"qemu","fixed_in":["8.2.0-62.oe2403sp1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP3","package":"qemu","fixed_in":["8.2.0-93.oe2403sp3"],"sources":["osv"]},{"ecosystem":"Rocky 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5.0"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:88421","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:94537","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:95346","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-12080","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2499603","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://gitlab.com/qemu-project/qemu/-/work_items/3929"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12080","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-9xqq-92hv-jj34"},{"url":"https://bugzilla.redhat.com/2499603","tags":["report"]},{"url":"https://errata.almalinux.org/9/ALSA-2026-88421.html","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-12080","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-12080","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4084","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4085","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4086","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4087","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:88421","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-12080","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-12080","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-12080","title":"Qemu-kvm: qemu-guest-agent: local privilege escalation via symlink attack in guest-ssh-add-authorized-keys","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T12:40:45.399Z","modified":"2026-11-09T16:28:25.116Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-61"],"updated_at":"2026-11-09T17:34:05.130069Z"}],"euvd":[{"id":"EUVD-2026-45941","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T12:40:45Z","modified":"2026-11-09T16:28:25Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-09T17:17:30.806151Z"}],"ghsa":[{"id":"GHSA-9xqq-92hv-jj34","title":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a...","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T15:32:04Z","modified":"2026-11-09T18:31:44Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-61"],"updated_at":"2026-11-09T18:49:19.883486Z"}],"nvd":[{"id":"CVE-2026-12080","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T13:16:55.543Z","modified":"2026-11-09T17:17:28.003Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-61"],"updated_at":"2026-11-09T20:15:31.280645Z"}],"osv":[{"id":"BELL-CVE-2026-12080","status":"published","published":"2026-07-14T06:03:10.41662Z","modified":"2026-11-07T07:15:05.002939379Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-07T07:40:27.39378Z"},{"id":"DEBIAN-CVE-2026-12080","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T13:16:55.543Z","modified":"2026-11-10T09:47:31.286361836Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-07T10:14:39.995311Z"},{"id":"OESA-2026-4084","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.(CVE-2026-12080)","status":"published","published":"2026-09-25T01:28:13Z","modified":"2026-09-25T01:45:10.352253245Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4085","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.(CVE-2026-12080)","status":"published","published":"2026-09-25T01:28:14Z","modified":"2026-09-25T01:45:12.218510706Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4086","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.(CVE-2026-12080)","status":"published","published":"2026-09-25T01:28:15Z","modified":"2026-09-25T01:45:10.349865813Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4087","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.(CVE-2026-12080)","status":"published","published":"2026-09-25T01:28:15Z","modified":"2026-09-25T01:45:12.215209033Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:47.643553Z"},{"id":"RLSA-2026:88421","title":"Important: qemu-kvm security, bug fix, and enhancement update","description":"Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM.\n\nSecurity Fix(es):\n\n* qemu-kvm: qemu-guest-agent: Local privilege escalation via symlink attack in guest-ssh-add-authorized-keys (CVE-2026-12080)\n\nBug Fix(es) and Enhancement(s):\n\n* qemu-img can't create a qcow2 overlay with 'data_file' feature on top of a file without destroying the original image [rhel-9.8.z] (JIRA:Rocky Linux-164549)\n\n* live migration of a VM with a scsi3pr to a node that previously held a reservation on that disk fails. [rhel-9.8.z] (JIRA:Rocky Linux-280223)\n\n* Fix pending QEMU issues for L1VH GA - QEMU [rhel-9.8.z] (JIRA:Rocky Linux-283121)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-10-23T06:45:29.064378Z","modified":"2026-10-23T07:15:02.48857773Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.76659Z"},{"id":"UBUNTU-CVE-2026-12080","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T13:16:00Z","modified":"2026-10-22T23:20:03.801423491Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:00.081948Z"},{"id":"ALSA-2026:88421","title":"Important: qemu-kvm security, bug fix, and enhancement update","description":"Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM.  \n\nSecurity Fix(es):  \n\n  * qemu-kvm: qemu-guest-agent: Local privilege escalation via symlink attack in guest-ssh-add-authorized-keys (CVE-2026-12080)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * qemu-img can't create a qcow2 overlay with 'data_file' feature on top of a file without destroying the original image [almalinux-9.8.z] (JIRA:AlmaLinux-164549)\n  * live migration of a VM with a scsi3pr to a node that previously held a reservation on that disk fails. [almalinux-9.8.z] (JIRA:AlmaLinux-280223)\n  * Fix pending QEMU issues for L1VH GA - QEMU [almalinux-9.8.z] (JIRA:AlmaLinux-283121)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-10-22T00:00:00Z","modified":"2026-11-04T16:45:02.633559162Z","updated_at":"2026-11-04T17:11:08.071099Z"},{"id":"AZL-93006","title":"CVE-2026-12080 affecting package qemu 10.1.0-2","description":"A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the guest-ssh-add-authorized-keys command handler by manipulating symbolic links. This can occur either through a deterministic directory-symlink bypass or a Time-of-Check to Time-of-Use (TOCTOU) file-symlink race. Successful exploitation allows the attacker to gain ownership of arbitrary root-owned files or directories, leading to root access. This vulnerability requires an external management layer (e.g., libvirt) to trigger the affected code path.","status":"published","published":"2026-07-20T13:16:55Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:25.880689Z"}]}}