Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, OpenC3 COSMOS contains a design flaw in the save_tool_config() function that allows saving tool configuration files at arbitrary locations inside the shared /plugins directory tree by supplying crafted configuration filenames. Although the implementation sufficiently mitigates standard path traversal attacks, by canonicalizing filename to an absolute path, all plugins share this same root directory. That enables users to create arbitrary file structures and overwrite existing configuration files within the shared /plugins directory. This issue has been patched in versions 6.10.5 and 7.0.0-rc3.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
CVE-2026-42085 Arbitrary File Write in OpenC3 COSMOS Via Path Traversal in Shared Plugins Directory https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42085
Post summary
The post merely announces CVE‑2026‑42085, describing an arbitrary file write via path traversal in OpenC3 COSMOS, without providing PoC, exploit, or remediation details.
CVE-2026-42085 OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, OpenC3… https://www.cve.org/CVERecord?id=CVE-2026-42085
Post summary
The text identifies CVE-2026-42085 as affecting OpenC3 COSMOS before versions 6.10.5 and 7.0.0‑rc3 and links to the CVE record, providing a standard disclosure without additional PoC, exploit, or patch information.
3 of 3 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | openc3 | cosmos | - | - | - |
| App | openc3 | cosmos | 7.0.0 | - | - |
| App | openc3 | cosmos | 7.0.0 | - | - |