CVE-2026-63559
o6 Automation open62541 Integer Overflow or Wraparound
HIGH
7.5
CVSS Score
Published: July 30, 2026 at 09:47 PM UTC
Updated: October 23, 2026 at 10:10 PM UTC
1 product affected across 1 vendorOpen62541
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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (7)
Source: cverecord
https://www.o6-automation.com/contactSource: cverecord
https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-08SSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHicscert
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusAWAITING ANALYSIS
CWE
CWE-190
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