CVE-2017-7575
Schneider Electric Modicon TM221CE16R 1.3.3.3 devices allow remote attackers to discover the application-protection password via a \x00\x01\x00\x00\x00\x05\x01\x5a\x00\x03\x00 request to the Modbus port (502/tcp).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Schneider Electric Modicon TM221CE16R 1.3.3.3 devices allow remote attackers to discover the application-protection password via a \x00\x01\x00\x00\x00\x05\x01\x5a\x00\x03\x00 request to the Modbus port (502/tcp). Subsequently the application may be arbitrarily downloaded, modified, and uploaded.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.09% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- schneider-electric/modicon tm221ce16r firmware
- Source
- cve@mitre.org
EPSS 4.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-02
- http://www.securityfocus.com/bid/97523Third Party Advisory, VDB Entry
- https://os-s.net/advisories/OSS-2017-01.pdfExploit, Third Party Advisory
- http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2017-097-02
- http://www.securityfocus.com/bid/97523Third Party Advisory, VDB Entry
- https://os-s.net/advisories/OSS-2017-01.pdfExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.