The aerospace agency revealed the issue in a Tuesday post that explained recent telemetry from the craft suggested all its systems were working as intended.

After NASA received that data, MAVEN swung behind Mars, and therefore lost contact with Earth as its radios can’t send data through a planet.

But when MAVEN’s orbit brought it back into view, ground stations on Earth could not detect any signal from the probe.

NASA doesn’t know what’s gone wrong.

“The issue was not caused, directly or indirectly, by a cyber attack on Cloudflare’s systems or malicious activity of any kind. Instead, it was triggered by changes being made to our body parsing logic while attempting to detect and mitigate an industry-wide vulnerability disclosed this week in React Server Components.” https://blog.cloudflare.com/5-december-2025-outage/