CVE-2020-27295 json
The affected product has uncontrolled resource consumption issues, which may allow an attacker to cause a denial-of-service condition on th…
published 2021-01-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19808
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
The affected product has uncontrolled resource consumption issues, which may allow an attacker to cause a denial-of-service condition on the OPC UA Tunneller (versions prior to 6.3.0.8233).
Patch / fix
- honeywell opc_ua_tunneller 6.3.0.8233
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-021-03 updated cvss 7.5
Honeywell OPC UA Tunneller
-
Matrikon, Honeywell OPC UA Tunneller < 6.3.0.8233affected: vendor fix matrikonopc.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
1.49% chance of exploitation in the next 30 days, higher than 74% 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 OPC UA Tunneller
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
us-cert.cisa.gov
/ics/advisories/icsa-21-021-03
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2020-27295
- NVD CVE-2020-27295
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