HOMEVULNERABILITIESCVE-2017-6034
CRITICAL

CVE-2017-6034

CWE-294Published: June 30, 2017· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An authentication bypass by capture-replay issue was discovered in Schneider Electric Modicon Modbus Protocol. Sensitive information is transmitted in cleartext in the Modicon Modbus protocol, which may allow an attacker to replay the following commands: run, stop, upload, and download.

NVD Source

Technical Analysis

CVE-2017-6034 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.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

schneider-electric2 product(s)
modbus firmwaremodbus
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/97562
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-17-101-01
ADVISORYhttp://www.securityfocus.com/bid/97562
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-17-101-01

All References (6)

→
http://www.securityfocus.com/bid/97562Third Party Advisory · VDB Entry
→
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2017/icsa-17-101-01.json
→
https://ics-cert.us-cert.gov/advisories/ICSA-17-101-01Third Party Advisory · US Government Resource
→
https://www.se.com/us/en/download/document/SEVD-2017-065-01/
→
http://www.securityfocus.com/bid/97562Third Party Advisory · VDB Entry
→
https://ics-cert.us-cert.gov/advisories/ICSA-17-101-01Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2017-6034
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-294
CISA KEVNo
Affected1 vendor(s)
PublishedJun 30, 2017

Related CVEs (CWE-294)

CVE-2025-49752
10.0
CVE-2024-38438
9.8
CVE-2017-3191
9.8
CVE-2018-7790
9.8
CVE-2022-29334
9.8
CVE-2023-47435
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-6034 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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