CVE•Published 2017-06-30•Modified 2026-06-04•0 articles on news•7 live references•NVD data
CVE-2017-6030Schneider-electric · Modicon_m241_firmware
Vulnerability data via NVD (ingested)
CVSS v3.1
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
EPSS percentile
61
Exploit Prediction Scoring System · top 39% of all CVEs
Description
A predictable value range from previous values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected products generate insufficiently random TCP initial sequence numbers that may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections.
Timeline
Published 2017-06-30
Modified 2026-06-04
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-2017-6030Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Modicon M241 Firmware"Hosts Shodan identified as running Modicon M241 Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2017-6030Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2017-6030Censys host search filtered to this CVE id.
grep.app
CVE-2017-6030Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2017-6030GitHub code search for direct mentions.
Google dork
"CVE-2017-6030" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (2)
We haven't classified any articles referencing CVE-2017-6030 yet. The external references above still apply.