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CVE-2025-0781VulnerabilityPublished Updated

Simgear: An attacker can bypass the sandboxing of Nasal scripts and arbitrarily write to any file path that the user

Affects simgearSource GCVE Database

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Not known to be exploited · CVSS 9.9 Critical · fixed in 3.4.0-3ubuntu0.1~esm1 : patch simgear as a priority.

Data as of 6 Nov 2026, 15:10 UTC

CVSS 3.1 base score
9.9Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.4.0-3ubuntu0.1~esm1, 1:2018.1.1+dfsg-1ubuntu0.1~esm1, 1:2019.1.1+dfsg-3ubuntu0.1~esm1 +2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Jan 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 24.04 LTSflightgearpkg:deb/ubuntu/flightgear?arch=source&distro=nobleOther threatsAffected
  • 1:2020.3.18+dfsg-1 – 1:2020.3.18+dfsg-1build3
4 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSsimgearpkg:deb/ubuntu/simgear?arch=source&distro=esm-apps/nobleOther threatsAffected
  • <1:2020.3.18+dfsg-2.1ubuntu0.1~esm1
Fixed in
  • 1:2020.3.18+dfsg-2.1ubuntu0.1~esm1
Ubuntu Pro 22.04 LTSsimgearpkg:deb/ubuntu/simgear?arch=source&distro=esm-apps/jammyOther threatsAffected
  • <1:2020.3.6+dfsg-1ubuntu0.1~esm2
Fixed in
  • 1:2020.3.6+dfsg-1ubuntu0.1~esm2
Ubuntu Pro 20.04 LTSsimgearpkg:deb/ubuntu/simgear?arch=source&distro=esm-apps/focalOther threatsAffected
  • <1:2019.1.1+dfsg-3ubuntu0.1~esm1
Fixed in
  • 1:2019.1.1+dfsg-3ubuntu0.1~esm1
Ubuntu Pro 18.04 LTSsimgearpkg:deb/ubuntu/simgear?arch=source&distro=esm-apps/bionicOther threatsAffected
  • <1:2018.1.1+dfsg-1ubuntu0.1~esm1
Fixed in
  • 1:2018.1.1+dfsg-1ubuntu0.1~esm1
Ubuntu Pro 16.04 LTSsimgearpkg:deb/ubuntu/simgear?arch=source&distro=esm-apps/xenialOther threatsAffected
  • <3.4.0-3ubuntu0.1~esm1
Fixed in
  • 3.4.0-3ubuntu0.1~esm1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available and should be applied by updating SimGear packages to the versions listed in the Ubuntu security advisory USN-7965-1. These updates are provided through Ubuntu Pro Extended Security Maintenance (ESM) for supported Ubuntu LTS releases. A standard system update via Ubuntu Pro ESM will apply the necessary patches. No additional mitigation steps are required beyond applying these official updates.

Description

SimGear contains a vulnerability that allows an attacker to bypass the sandboxing of Nasal scripts, enabling arbitrary file writes to any path the user can modify. This flaw can lead to arbitrary code execution with elevated privileges if a specially crafted file is opened. The vulnerability affects multiple Ubuntu package versions of SimGear and has a critical CVSS score of 9.9. Fixes are available through Ubuntu Pro Extended Security Maintenance (ESM) updates.

References

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