Unsachgemäße Neutralisierung von Argumentbegrenzern in einem Befehl ('Argument Injection')-Fehler in upKeeper Solutions upKeeper Instant Privilege Access ermöglicht das Überschreiben eines privilegierten Ausführungs-Threads.

The impact of CVE-2026-2449 is the potential for an attacker to hijack a privileged thread of execution within the upKeeper Instant Privilege Access system. This could allow an attacker to gain elevated privileges and execute arbitrary commands with the permissions of the privileged thread. The specific consequences depend on the privileges held by the hijacked thread and the attacker's ability to exploit the compromised environment. The blast radius could extend to other systems and data accessible by the privileged thread.

Organizations utilizing upKeeper Instant Privilege Access for privileged access management are at risk, especially those with legacy configurations or deployments where input validation is not rigorously enforced. Shared hosting environments where multiple users share the same server instance are also particularly vulnerable, as a compromise of one user could potentially lead to the compromise of others.

• linux / server:

journalctl -u upkeeper -g "argument injection"
ps aux | grep -i upkeeper

• generic web:

curl -I <upkeeper_url>

1. 2026-04-14Disclosure

   disclosure

1. Reserviert2026-02-13
2. Veröffentlicht2026-04-14
3. EPSS aktualisiert2026-04-22

The recommended mitigation for CVE-2026-2449 is to upgrade upKeeper Instant Privilege Access to a version that addresses the vulnerability. Since a fixed version is not specified in the input, carefully review the vendor's security advisories for the latest recommended version. As a temporary workaround, restrict access to the upKeeper Instant Privilege Access system and implement strict input validation on all user-supplied data. Regularly monitor system logs for any suspicious activity. After upgrading, verify the fix by attempting to inject a malicious argument; the attempt should be blocked.