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EulerOS 2.0 SP15 : qemu (EulerOS-SA-2026-4013)

high Nessus Plugin ID 364002

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the versions of the qemu packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 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.(CVE-2026-12080)

Tenable has extracted the preceding description block directly from the EulerOS qemu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected qemu packages.

See Also

http://www.nessus.org/u?a78bda5f

Plugin Details

Severity: High

ID: 364002

File Name: EulerOS_SA-2026-4013.nasl

Version: 1.1

Type: Local

Published: 10/8/2026

Updated: 10/8/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.15

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-12080

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:qemu-img, p-cpe:/a:huawei:euleros:qemu

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 10/8/2026

Vulnerability Publication Date: 7/20/2026

Reference Information

CVE: CVE-2026-12080