CVE-2020-12505 json
WAGO: Vulnerability in web-based authentication in WAGO 750-8XX Version <= FW07
published 2020-09-30 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4807
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW07 allows an attacker to change some special parameters without authentication. This issue affects: WAGO 750-852, WAGO 750-880/xxx-xxx, WAGO 750-881, WAGO 750-831/xxx-xxx, WAGO 750-882, WAGO 750-885/xxx-xxx, WAGO 750-889 in versions FW07 and below.
Exploit prediction
1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P |
Affected products
- WAGO 750-852
- WAGO 750-880/xxx-xxx
- WAGO 750-881
- WAGO 750-831/xxx-xxx
- WAGO 750-882
- WAGO 750-885/xxx-xxx
- WAGO 750-889
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
cert.vde.com
/en-us/advisories/vde-2020-027
third-party-advisory
Sources
- CVE List CVE-2020-12505
- NVD CVE-2020-12505
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