Status: UPDATED | Advisory ID: CVE-2026-63559
| CVE | CVE-2026-63559 |
| CVSS Score / Version | 7.5 (High) / CVSS v3.1 |
| Updated | 2026-09-03 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is none. |
| Affected products | o6 Automation open62541 |
| Classified as | CWE-190 (Integer Overflow or Wraparound) |
| Exploitation prediction (EPSS) | 0.70% probability of exploitation in the next 30 days (51% percentile) -- FIRST.org's EPSS model. |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| o6 Automation | open62541 |
| Subsystems | General OT |
| Sectors | Multiple |
An integer overflow in the UA_Variant arrayDimensions product
computation in open62541 may allow a remote attacker to read
out-of-bounds heap memory, potentially disclosing sensitive information.
Monitor o6 Automation's web page for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-63559 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-63559 |