HOME VULNERABILITIESCVE-2017-6030

MEDIUM

CVE-2017-6030

CWE-343Published: June 30, 2017· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official 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.

Technical Analysis

CVE-2017-6030 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected Vendors & Products

schneider-electric6 product(s)

modicon m241 firmwaremodicon m241modicon m251 firmwaremodicon m251modicon m221 firmwaremodicon m221

Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/97254

ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-17-089-02

ADVISORYhttp://www.securityfocus.com/bid/97254

ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-17-089-02

All References (5)

→

http://www.securityfocus.com/bid/97254Third Party Advisory · VDB Entry

→

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2017/icsa-17-089-02.json

→

https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory · US Government Resource

→

http://www.securityfocus.com/bid/97254Third Party Advisory · VDB Entry

→

https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2017-6030

CVSS Score6.5 / 10

SeverityMEDIUM

WeaknessCWE-343

CISA KEVNo

Affected1 vendor(s)

PublishedJun 30, 2017

Related CVEs (CWE-343)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2017-6030 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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