SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-20998

In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.

CRITICAL 9.8EPSS 1.11%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.

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
1.11% probability · 64th percentile
CISA KEV
Not listed
Weakness
CWE-306
Affected
wago/0852-0303 firmware · wago/0852-1305 firmware · wago/0852-1505 firmware · wago/0852-1305\/000-001 firmware · wago/0852-1505\/000-001 firmware
Source
info@cert.vde.com

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