CVE•Published 2026-09-04•Modified 2026-09-08•1 article on news•4 live references•NVD data
CVE-2026-18221Ibm · I
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
24
Exploit Prediction Scoring System · top 76% of all CVEs
Weaknesses (CWE)
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.
Timeline
Published 2026-09-04
Modified 2026-09-08
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).
Shodan · vuln tag0 hosts
vuln:CVE-2026-18221Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"I"Hosts Shodan identified as running I.
More intel sources (5)
Shodan report
vuln:CVE-2026-18221Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-18221Censys host search filtered to this CVE id.
grep.app
CVE-2026-18221Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-18221GitHub code search for direct mentions.
Google dork
"CVE-2026-18221" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.