Detections
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EulerOS Virtualization 2.13.1 : libcap (EulerOS-SA-2026-2373)

high Nessus Plugin ID 320748

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

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

 A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.(CVE-2026-4878)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization libcap 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 libcap packages.

See Also

http://www.nessus.org/u?e2cfbae2

Plugin Details

Severity: High

ID: 320748

File Name: EulerOS_SA-2026-2373.nasl

Version: 1.1

Type: Local

Published: 6/12/2026

Updated: 6/12/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-4878

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:libcap-help, cpe:/o:huawei:euleros:uvp:2.13.1, p-cpe:/a:huawei:euleros:libcap, p-cpe:/a:huawei:euleros:libcap-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/11/2026

Vulnerability Publication Date: 4/9/2026

Reference Information

CVE: CVE-2026-4878