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CVE-2025-0781: An attacker can bypass the sandboxing of Nasal scripts and arbitrarily write to any file path that the user ha

42
This month
HIGH 8.6WATCHLISTUPGRADEMITIGATE

CVE-2025-0781 is a high-severity flaw (CVSS 8.6) affecting simgear, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • High severity
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score8.6 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.4% (top 71%)
CISA exploited listNo
WeaknessCWE-863
Published2025-01-28
Last modified2026-06-17
Publisher (CNA): GitLab Inc. · Vendor: debian · flightgear

Share: LinkedIn · X · Reddit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

flightgear simgear UPGRADE
Affected: <= 2020.3.19
Fixed in: newer than 2020.3.19
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy simgear || rpm -q simgear || simgear --version
2. UPGRADE to newer than 2020.3.19 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade simgear
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade simgear
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
debian debian linux MITIGATE
Affected: 11.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 11.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-0781?

simgear: upgrade to newer than 2020.3.19; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-0781 being exploited?

CVE-2025-0781 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-0781 affect?

CVE-2025-0781 affects simgear, debian linux. Severity is high (CVSS 8.6). 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.

How urgent is CVE-2025-0781?

Priority 42/100. High severity; On your watchlist

Software pages

Debian vulnerabilities

References

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