CVE-2017-6034

9.8 criticalEPSS 5.6%

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 5.6% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
CWEs: CWE-287, CWE-294
Published: 2017-06-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

schneider-electric:modbus_firmware

References

http://www.securityfocus.com/bid/97562
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-17-101-01
https://www.se.com/us/en/download/document/SEVD-2017-065-01/
http://www.securityfocus.com/bid/97562

Check your stack JSON