CVE-2026-63362
MEDIUMCVSS 5.9/10EPSS 1.51%
Last modified
CVE-2026-63362 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. An unsigned integer underflow in the PubSub signature verification path in open62541 may allow a remote attacker to cause a denial of service via a crafted UDP packet.. EPSS estimates a 1.51% chance of exploitation in the next 30 days.
Description
An unsigned integer underflow in the PubSub signature verification path in open62541 may allow a remote attacker to cause a denial of service via a crafted UDP packet.
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-2026-63362?
An unsigned integer underflow in the PubSub signature verification path
in open62541 may allow a remote attacker to cause a denial of service
via a crafted UDP packet.
How severe is CVE-2026-63362?
CVE-2026-63362 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.
How do I fix CVE-2026-63362?
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.
Related CVEs from 2026
- CVE-2026-6335GitLab has remediated an issue in GitLab CE/EE affecting all…5.4
- CVE-2026-63358FileGator accepts arbitrary Unix permission values via the '…8.4
- CVE-2026-63359The Appriss Insights (Equifax) Victim Information Notificati…9.8
- CVE-2026-6336GitLab has remediated an issue in GitLab CE/EE affecting all…5.3
- CVE-2026-63360LimeSurvey Community Edition 7.0.5+260623 contains an authen…7.4
- CVE-2026-63361LimeSurvey Community Edition 7.0.5 contains an authenticated…8.5
- CVE-2026-6337Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
- CVE-2026-63373draw.io is a configurable diagramming and whiteboarding appl…4.2
- CVE-2026-63374AnyIO is a high level asynchronous concurrency and networkin…9.3
- CVE-2026-63376toml-node is a TOML parser for Node.js and the browser. Prio…8.2
- CVE-2026-63379Libevent is an event notification library. Prior to 2.1.13 a…6.3
- CVE-2026-6338A HTTP request smuggling and desynchronization vulnerability…4.9
Are you affected by CVE-2026-63362?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST