CVE-2020-6985 Hardcoded credentials in Moxa PT-7528 series firmware, Version 4.0 or lower, PT-7828 series firmware, Version 3.9 or lower

Critical 9.8 Published 24 Mar 2020 Updated 4 Aug 2024

Hard-coded service code allows unauthorized console access on Moxa PT-7528 and PT-7828 series devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-6985?

CVE-2020-6985 is a critical vulnerability in Moxa PT-7528 series firmware, Version 4.0 or lower, PT-7828 series firmware, Version 3.9 or lower, published on 24 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, these devices use a hard-coded service code for access to the console.

Weakness: CWE-798

Which versions are affected by CVE-2020-6985?

It affects 55 products.

Products include Moxa Pt-7528-12msc-12tx-4gsfp-Hv-Hv Firmware, Moxa Pt-7528-12msc-12tx-4gsfp-Hv Firmware, Moxa Pt-7528-12msc-12tx-4gsfp-Wv-Wv Firmware, Moxa Pt-7528-12msc-12tx-4gsfp-Wv Firmware, Moxa Pt-7528-12mst-12tx-4gsfp-Hv-Hv Firmware, Moxa Pt-7528-12mst-12tx-4gsfp-Hv Firmware and 49 more.

How do I fix CVE-2020-6985?

No fix has been published for CVE-2020-6985 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-6985 being exploited?

There is no known exploitation of CVE-2020-6985 in the wild and no public exploit code.

Sources

Also known as GHSA-gp77-fg8q-p93m.