Red Hat dnf5daemon-server D-Bus Session privileges management

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Red Hat dnf5daemon-server. The impacted element is an unknown function of the component D-Bus Session. The manipulation leads to privileges management. This vulnerability is uniquely identified as CVE-2026-111253. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Red Hat dnf5daemon-server (affected version unknown) and classified as problematic. This issue affects an unknown functionality of the component D-Bus Session. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is integrity, and availability. The summary by CVE is:

A flaw was found in dnf5daemon-server. Session methods on dynamically exported D-Bus session objects do not verify that the caller is the unique sender that created the session. A local attacker can modify another user's live package-management session and replace its resolved transaction plan. If the legitimate session party later authorizes execution, the root daemon may apply the attacker-chosen package operations.

The advisory is shared at access.redhat.com. The identification of this vulnerability is CVE-2026-111253 since 10/15/2026. The exploitation is known to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/05/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Red Hat

Name

• dnf5daemon-server

License

• open-source

Website

• Vendor: https://www.redhat.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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