CVE•Published 2026-07-14•Modified 2026-10-24•0 articles on news•4 live references•NVD data
CVE-2026-9636
Vulnerability data via NVD (ingested)
CVSS v3.1
—
EPSS percentile
11
Exploit Prediction Scoring System · top 89% of all CVEs
Weaknesses (CWE)
Description
A security issue exists within CompactLogix® 5380, ControlLogix® 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections.
Timeline
Published 2026-07-14
Modified 2026-10-24
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-2026-9636Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-9636Censys host search filtered to this CVE id.
grep.app
CVE-2026-9636Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-9636GitHub code search for direct mentions.
Google dork
"CVE-2026-9636" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (1)
We haven't classified any articles referencing CVE-2026-9636 yet. The external references above still apply.