CVE-2021-20998
CRITICALCVSS 9.8/10EPSS 1.11%
Last modified
CVE-2021-20998 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.. EPSS estimates a 1.11% chance of exploitation in the next 30 days.
Description
In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wago | 0852-0303 Firmware | <= 1.2.3.s0 |
| Wago | 0852-1305 Firmware | <= 1.1.7.s0 |
| Wago | 0852-1505 Firmware | <= 1.1.6.s0 |
| Wago | 0852-1305\/000-001 Firmware | <= 1.0.4.s0 |
| Wago | 0852-1505\/000-001 Firmware | <= 1.0.4.s0 |
References
- https://cert.vde.com/en-us/advisories/vde-2021-013Third Party Advisory
- https://cert.vde.com/en-us/advisories/vde-2021-013Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2021-20998?
CVE-2021-20998 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20998?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20998?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST