CVE-2020-27274

7.5 highEPSS 1.2%

High (7.5) in honeywell opc ua tunneller. EPSS 1.2% chance of exploitation in the next 30 days.

Some parsing functions in the affected product do not check the return value of malloc and the thread handling the message is forced to close, which may lead to a denial-of-service condition on the OPC UA Tunneller (versions prior to 6.3.0.8233).

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWE: CWE-754
Published: 2021-01-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

honeywell:opc_ua_tunneller

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-021-03
https://us-cert.cisa.gov/ics/advisories/icsa-21-021-03

Check your stack JSON