CVE-2026-67857

EUVD-2026-52967
open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 50.18%
Debian logo
Debian Releases
Debian Product
Codename
open62541
forky
vulnerable
sid
vulnerable
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
open62541
jammy
dne
noble
dne
resolute
needs-triage
stonking
needs-triage
Common Weakness Enumeration
References
https://github.com/gff-cw/information/issues/9
https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect.c
https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect_loop.c
https://github.com/open62541/open62541/blob/v1.5.5/src/client/ua_client_connect.c
https://github.com/open62541/open62541/issues/8104
https://github.com/open62541/open62541/issues/8104