CVE-2020-5801 in the critical feed json
An attacker can craft and send an OpenNamespace message to port 4241 with valid session-id that triggers an unhandled exception in CFTLDMan…
published 2020-12-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26958
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 29.7%
- EPSS 29.7% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
An attacker can craft and send an OpenNamespace message to port 4241 with valid session-id that triggers an unhandled exception in CFTLDManager::HandleRequest function in RnaDaSvr.dll, resulting in process termination. Observed in FactoryTalk Linx 6.11. All versions of FactoryTalk Linx are affected.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-028-01 updated cvss 7.5
Rockwell Automation FactoryTalk Linx and FactoryTalk Services Platform
-
Rockwell Automation FactoryTalk Linx software <= 6.20affected: mitigation “Rockwell Automation published PN1540 to inform users of the risk of these vulnerabilities and instruct users on the proper use of patches.” rockwellautomation.custhelp.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
29.66% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a Rockwell FactoryTalk Linx
Classification
- Weakness
-
- CWE-755 Improper Handling of Exceptional Conditions
References
-
tenable.com
/security/research/tra-2020-71
third-party-advisory
Sources
- CVE List CVE-2020-5801
- NVD CVE-2020-5801
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