CVE-2026-63362: o6 Automation open62541 Integer Underflow
Published Jul 30, 2026
·Updated
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.
Affected Software
1 affected component
open62541 open62541
Event History
Jul 30, 2026
CVE Published
via MITRE·10:01 PM
Data Sourced
via MITRE·10:01 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-63362?
CVE-2026-63362 has a medium severity rating of 5.9.
2
How does CVE-2026-63362 affect the open62541 software?
CVE-2026-63362 allows an integer underflow that can lead to a denial of service through crafted UDP packets.
3
What type of attack is associated with CVE-2026-63362?
CVE-2026-63362 is associated with remote denial of service attacks.
4
How can I mitigate the risks of CVE-2026-63362?
To mitigate CVE-2026-63362, ensure you are running the latest patched version of open62541.
5
Is user interaction required to exploit CVE-2026-63362?
No, CVE-2026-63362 does not require user interaction to be exploited.