[0day-rubbish] Royal Server 5.04.50529.0 Local privilege escalation to LocalSystem on the execution path without credential override (7.2)

0day Rubbish Research Team disclosed a CVSS 7.2 local privilege escalation (CWE-250) in Royal Server 5.04.50529.0 to LocalSystem.

Researchers publicly disclosed a local privilege escalation vulnerability in Royal Server 5.04.50529.0, classified as CWE-250 (execution with unnecessary privileges) with a CVSS score of 7.2. The flaw allows escalation to LocalSystem on the execution path without credential override. The disclosure was posted to the Full Disclosure mailing list on September 8, 2026; no patch or CVE id was mentioned in the notice.

• LPE to LocalSystem without credential override in Royal Server 5.04.50529.0.
• Classified CWE-250, execution with unnecessary privileges; CVSS 7.2.
• Disclosed publicly on the Full Disclosure mailing list.