CVE•Published 2026-08-06•Modified 2026-08-31•1 article on news•6 live references•NVD data
CVE-2026-67870
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
45
Exploit Prediction Scoring System · top 55% of all CVEs
Weaknesses (CWE)
Description
In open62541 v1.5.5, the server-side AddReferences implementation contains an incomplete validation flaw for non-local ExpandedNodeId targets. A remote attacker can send a crafted AddReferencesRequest with an empty targetServerUri and a non-zero targetNodeId.serverIndex, causing the target node pointer to remain NULL while execution continues.
Timeline
Published 2026-08-06
Modified 2026-08-31
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-67870Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-67870Censys host search filtered to this CVE id.
grep.app
CVE-2026-67870Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-67870GitHub code search for direct mentions.
Google dork
"CVE-2026-67870" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-67870 on GitHub.