CVE-2026-67857
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.