CVE-2026-67856CWE-400denial-of-service

CVE-2026-67856

High · published August 5, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
54.8
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00759 · 54.8th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-08-05T02:17Z
References (6)
https://github.com/open62541/open62541/blob/master/examples/access_control/server_access_control.c · [email protected]https://github.com/open62541/open62541/blob/master/src/server/ua_services_subscription.c · [email protected]https://github.com/open62541/open62541/blob/master/src/server/ua_subscription.c · [email protected]https://github.com/open62541/open62541/blob/master/src/server/ua_subscription.h · [email protected]https://github.com/open62541/open62541/issues/8092 · [email protected]https://github.com/open62541/open62541/issues/8092 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 04 AUG 00:00Z
    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)…
    cvelistv5