CVE-2020-27299
CRITICALCVSS 9.1/10EPSS 1.67%
Last modified
CVE-2020-27299 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. The affected product is vulnerable to an out-of-bounds read, which may allow an attacker to obtain and disclose sensitive data information or cause the device to crash on the OPC UA Tunneller (versions prior to 6.3.0.8233).. EPSS estimates a 1.67% chance of exploitation in the next 30 days.
Description
The affected product is vulnerable to an out-of-bounds read, which may allow an attacker to obtain and disclose sensitive data information or cause the device to crash on the OPC UA Tunneller (versions prior to 6.3.0.8233).
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Honeywell | Opc Ua Tunneller | < 6.3.0.8233 |
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-021-03Third Party Advisory, US Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-21-021-03Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-27299?
The affected product is vulnerable to an out-of-bounds read, which may allow an attacker to obtain and disclose sensitive data information or cause the device to crash on the OPC UA Tunneller (versions prior to 6.3.0.8233).
How severe is CVE-2020-27299?
CVE-2020-27299 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27299?
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-2020-27299?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST