Use After Free in O6 Automation Open62541

CVE-2026-63035

A heap use-after-free vulnerability in the TransferSubscriptions service in open62541 may allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code.

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-63035?
CVE-2026-63035 is a high-severity vulnerability in O6 Automation Open62541, classified under Use After Free. CVSS score: 8.1/10. Published 2026-07-30.
How severe is CVE-2026-63035?
High severity. CVSS v3 base score is 8.1 out of 10.