CVE-2026-12080
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
30/100
Published: 2026-07-20
Modified: 2026-10-22
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
High
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.