Auth bypass in Wago 0852-0303
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Wago 0852-0303 — versions unspecified
- Wago 0852-0303 Firmware
- Wago 0852-1305 — versions unspecified
- Wago 0852-1305/000-001 — versions unspecified
- Wago 0852-1305\/000-001
- Wago 0852-1305\/000-001 Firmware
- Wago 0852-1305 Firmware
- Wago 0852-1505 — versions unspecified
- Wago 0852-1505/000-001 — versions unspecified
- Wago 0852-1505\/000-001
Weakness classification (CWE)
References
- cert.vde.com/en-us/advisories/vde-2021-013 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20998?
- CVE-2021-20998 is a critical-severity vulnerability in Wago 0852-0303, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2021-05-13.
- How severe is CVE-2021-20998?
- Critical severity. CVSS v3 base score is 10.0 out of 10.