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CVE-2018-20026
Improper Communication Address Filtering exists in CODESYS V3 products versions prior V3.5.14.0.
- 7.5HighCVSS base score
- 3.4%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Improper Communication Address Filtering exists in CODESYS V3 products versions prior V3.5.14.0.
Timeline
ID reserved
By Kaspersky
- 2 months later
· 2 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 3.4% · top 11% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Kaspersky Lab · CODESYS V3 products
- affected prior V3.5.14.0
References
References3
- 106251 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-036-codesys-control-v3-improper-communication-address-filtering/ (opens in a new tab)x_refsource_MISCx_transferred
- https://ics-cert.us-cert.gov/advisories/ICSA-18-352-04 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-12604 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-20026)Record last updated .