CVE-2026-67864

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.75% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 54.9% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-08-31.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-05 00:00Z2 MO AGO

Last updated

2026-08-06 14:07Z2 MO AGO

Reserved

2026-07-30

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-1287Improper Validation of Specified Type of InputBase

Data version

5.2

Document digest

5207727673a1f9139a0d5e04d07d17ddcfaa7b79eaa21862a7c7637586012ed2

• github.comhttps://github.com/open62541/open62541/issues/8133
• github.comhttps://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_nodemanagement.c
• github.comhttps://github.com/open62541/open62541/blob/v1.5.5/examples/ci_server.c
• github.comhttps://github.com/open62541/open62541/blob/v1.5.5/plugins/ua_accesscontrol_default.c