CVE-2026-65423
HIGHCVSS 8.8/10EPSS 0.60%
Last modified
CVE-2026-65423 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to trigger an out-of-bounds write.. EPSS estimates a 0.60% chance of exploitation in the next 30 days.
Description
An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to trigger an out-of-bounds write.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| o6 Automation | open62541 | >= 1.3.0, <= 1.3.17; >= 1.4.0, <= 1.4.16; >= 1.5.0, <= 1.5.4; master |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-65423?
An integer overflow in the UA_Variant arrayDimensions product
computation in open62541 may allow a remote attacker to trigger an
out-of-bounds write.
How severe is CVE-2026-65423?
CVE-2026-65423 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.
How do I fix CVE-2026-65423?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-65423?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST