SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-32976

Five buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier may allow a remote attacker to initiate a denial-of-service attack and execute arbitrary code.

CRITICAL 9.8EPSS 2.79%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Five buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O series firmware version 2.2 or earlier may allow a remote attacker to initiate a denial-of-service attack and execute arbitrary code.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.79% probability · 86th percentile
CISA KEV
Not listed
Weakness
CWE-121, CWE-787
Affected
moxa/nport iaw5150a-6i\/o firmware · moxa/nport iaw5150a-12i\/o firmware · moxa/nport iaw5250a-6i\/o firmware · moxa/nport iaw5250a-12i\/o firmware
Source
ics-cert@hq.dhs.gov

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.