CVE-2020-6983 Hardcoded credentials in Moxa PT-7528 series firmware, Version 4.0 or lower, PT-7828 series firmware, Version 3.9 or lower

High 7.5 Published 24 Mar 2020 Updated 4 Aug 2024

Hard-coded cryptographic keys in Moxa PT-7528 and PT-7828 firmware allow attackers to recover confidential data.

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-2020-6983?

CVE-2020-6983 is a high-severity 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, the affected products use a hard-coded cryptographic key, which increases the possibility that confidential data can be recovered.

Weakness: CWE-798, CWE-321

Which versions are affected by CVE-2020-6983?

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-2020-6983?

No fix has been published for CVE-2020-6983 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-6983 being exploited?

There is no known exploitation of CVE-2020-6983 in the wild and no public exploit code.

Sources

Also known as GHSA-6q75-7wm8-cjfw.