CVE-2026-67855CWE-400denial-of-service

CVE-2026-67855

High · published August 5, 2026

CVSS v3.1

7.5

EPSS

Percentile

42.5

In the wild

Unconfirmed

What it is

open62541 contains a heap use-after-free in the GDS PushManagement certificate update workflow when UA_ENABLE_GDS_PUSHMANAGEMENT is enabled. This allows a remote attacker to cause a denial of service.

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: 0.00508 · 42.5th percentile
Weakness: CWE-400 · Uncontrolled Resource Consumption
Published: 2026-08-05T02:17Z

References (7)

https://github.com/open62541/open62541 · [email protected]https://github.com/open62541/open62541/blob/master/arch/posix/eventloop_posix.c · [email protected]https://github.com/open62541/open62541/blob/master/examples/encryption/server_encryption.c · [email protected]https://github.com/open62541/open62541/blob/master/src/server/ua_server_internal.h · [email protected]https://github.com/open62541/open62541/blob/master/src/server/ua_server_ns0_gds.c · [email protected]https://github.com/open62541/open62541/issues/8093 · [email protected]https://github.com/open62541/open62541/issues/8093 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

04 AUG 00:00Z
open62541 contains a heap use-after-free in the GDS PushManagement certificate update workflow when UA_ENABLE_GDS_PUSHMANAGEMENT is enabled
cvelistv5