1. Home
  2. CVE Database
  3. CVE-2020-6989
CRITICAL · 9.8

CVE-2020-6989

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 condi...

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MoxaPt-7528-24Tx-Hv Firmware<= 4.0
MoxaPt-7528-24Tx-Hv-
MoxaPt-7528-24Tx-Hv-Hv Firmware<= 4.0
MoxaPt-7528-24Tx-Hv-Hv-
MoxaPt-7528-24Tx-Wv Firmware<= 4.0
MoxaPt-7528-24Tx-Wv-
MoxaPt-7528-24Tx-Wv-Hv Firmware<= 4.0
MoxaPt-7528-24Tx-Wv-Hv-
MoxaPt-7528-24Tx-Wv-Wv Firmware<= 4.0
MoxaPt-7528-24Tx-Wv-Wv-
MoxaPt-7528-12Msc-12Tx-4Gsfp-Hv Firmware<= 4.0
MoxaPt-7528-12Msc-12Tx-4Gsfp-Hv-
MoxaPt-7528-12Msc-12Tx-4Gsfp-Hv-Hv Firmware<= 4.0
MoxaPt-7528-12Msc-12Tx-4Gsfp-Hv-Hv-
MoxaPt-7528-12Msc-12Tx-4Gsfp-Wv Firmware<= 4.0
MoxaPt-7528-12Msc-12Tx-4Gsfp-Wv-
MoxaPt-7528-12Msc-12Tx-4Gsfp-Wv-Wv Firmware<= 4.0
MoxaPt-7528-12Msc-12Tx-4Gsfp-Wv-Wv-
MoxaPt-7528-12Mst-12Tx-4Gsfp-Hv Firmware<= 4.0
MoxaPt-7528-12Mst-12Tx-4Gsfp-Hv-

Related Weaknesses (CWE)

CWE-121CWE-787

References

FAQ

What is CVE-2020-6989?

CVE-2020-6989 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 condi...

How severe is CVE-2020-6989?

CVE-2020-6989 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2020-6989?

Check the references section above for vendor advisories and patch information. Affected products include: Moxa Pt-7528-24Tx-Hv Firmware, Moxa Pt-7528-24Tx-Hv, Moxa Pt-7528-24Tx-Hv-Hv Firmware, Moxa Pt-7528-24Tx-Hv-Hv, Moxa Pt-7528-24Tx-Wv Firmware.