CVE-2026-12080
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
Vulnerability in 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. The attack can lead to ownership of arbitrary root-owned files or directories, resulting in root access.
Risk Assessment
Risk of privilege escalation to root by a local user, potentially leading to full compromise of the guest system.
Recommendation
Apply the QEMU patch. Temporarily restrict access to QEMU Guest Agent or disable the vulnerable command.
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Original NVD description (English source)
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.