VDB-356834 · CVE-2026-40223 · WID-SEC-2026-0831

systemd 258/259 incorrect behavior order

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in systemd 258/259. Impacted is an unknown function. Such manipulation leads to incorrect behavior order. This vulnerability is traded as CVE-2026-40223. An attack has to be approached locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in systemd 258/259. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a incorrect behavior order vulnerability. Using CWE to declare the problem leads to CWE-696. The product performs multiple related behaviors, but the behaviors are performed in the wrong order in ways which may produce resultant weaknesses. Impacted is availability. CVE summarizes:

In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User= unit exists and is running.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-40223 since 04/10/2026. The exploitation is known to be difficult. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

Upgrading to version 260 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0831). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

Debian Linux
Red Hat Enterprise Linux
SUSE Linux
Oracle Linux
IBM MQ
SUSE openSUSE
RESF Rocky Linux
Open Source systemd

Productinfo

Name

systemd

Version

License

open-source

Website

Product: https://github.com/systemd/systemd/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.7
CNA Vector (MITRE): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Incorrect behavior order
CWE: CWE-696
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: systemd 260

Timelineinfo

04/10/2026 Advisory disclosed
04/10/2026 +0 days CVE reserved
04/10/2026 +0 days VulDB entry created
06/23/2026 +74 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-40223 (🔒)
GCVE (CVE): GCVE-0-2026-40223
GCVE (VulDB): GCVE-100-356834
CERT Bund: WID-SEC-2026-0831 - systemd: Mehrere Schwachstellen

Entryinfo

Created: 04/10/2026 17:51
Updated: 06/23/2026 19:18
Changes: 04/10/2026 17:51 (61), 04/13/2026 10:18 (7), 06/23/2026 19:18 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.