CVE-2026-67856

highCVSS 7.5covered by 1 sourcefirst seen 2026-08-04

An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via crafted CreateSubscription, CreateMonitoredItems(Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions requests

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Exploitation outlook

Low exploitation risk0.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-67856: An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service…nvd · 2026-08-04

External references

NVD record for CVE-2026-67856

CVE.org record

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