Auth bypass in Flightgear Simgear

CVE-2025-0781

An attacker can bypass the sandboxing of Nasal scripts and arbitrarily write to any file path that the user has permission to modify at the operating-system level.

Vulnerability class: Broken Access Control

EPSS: 0.003 (26.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-0781?
CVE-2025-0781 is a high-severity vulnerability in Flightgear Simgear, classified under Incorrect Authorization. CVSS score: 8.6/10. Published 2025-01-28.
How severe is CVE-2025-0781?
High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2025-0781 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.