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P4
CVE-2026-63559: open62541 1.3.0 through 1.3.17, 1.4.0 through 1.4.16, 1.5.0 through 1.5.4, master
CVE-2026-63559. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.00697 (percentile 0.52483), scored 22-Oct-2026.
Affected technology
open62541 · 1.3.0 through 1.3.17, 1.4.0 through 1.4.16, 1.5.0 through 1.5.4, master
o6 Automation
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
A remote attacker may read out-of-bounds heap memory, potentially disclosing sensitive information. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality impact as high; integrity and availability impact as none.
- CWE
- CWE-190
- CCR priority
- 30.2 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · Vendor/CNA
- EPSS
- 0.00697 · percentile 0.52483 · 2026-10-22
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-63559.html