CVE-2020-6989

high-risk
Published 2020-03-24

In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, a buffer overflow in the web server allows remote attackers to cause a denial-of-service condition or execute arbitrary code.

Do I need to act?

~
1.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Pt-7528-24Tx-Hv Firmware
Pt-7528-24Tx-Hv-Hv Firmware
Pt-7528-24Tx-Wv Firmware
Pt-7528-24Tx-Wv-Hv Firmware
Pt-7528-24Tx-Wv-Wv Firmware
Pt-7528-12Msc-12Tx-4Gsfp-Hv Firmware
Pt-7528-12Msc-12Tx-4Gsfp-Hv-Hv Firmware
Pt-7528-12Msc-12Tx-4Gsfp-Wv Firmware
Pt-7528-12Msc-12Tx-4Gsfp-Wv-Wv Firmware
Pt-7528-12Mst-12Tx-4Gsfp-Hv Firmware
Pt-7528-12Mst-12Tx-4Gsfp-Hv-Hv Firmware
Pt-7528-12Mst-12Tx-4Gsfp-Wv Firmware
Pt-7528-12Mst-12Tx-4Gsfp-Wv-Wv Firmware
Pt-7528-16Msc-8Tx-4Gsfp-Hv Firmware
Pt-7528-16Msc-8Tx-4Gsfp-Hv-Hv Firmware
Pt-7528-16Msc-8Tx-4Gsfp-Wv Firmware
Pt-7528-16Msc-8Tx-4Gsfp-Wv-Wv Firmware
Pt-7528-16Mst-8Tx-4Gsfp-Hv Firmware
Pt-7528-16Mst-8Tx-4Gsfp-Hv-Hv Firmware
Pt-7528-16Mst-8Tx-4Gsfp-Wv Firmware

Affected Vendors

Moxa

References (2)

Third Party Advisory https://www.us-cert.gov/ics/advisories/icsa-20-056-03
Third Party Advisory https://www.us-cert.gov/ics/advisories/icsa-20-056-03
63
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 5/34 · Minimal
Exposure 26/34 · High